Updates golang/go#28762

Change-Id: If73b292f28e553646431af995942169ce58d43f5
Reviewed-on: https://go-review.googlesource.com/c/149357
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>

[finishes #164248944](https://www.pivotaltracker.com/story/show/164248944)

Submodule src/golang.org/x/crypto 56440b844..e84da0312:
  > hkdf: add Extract and Expand
  > hkdf: improve example
  > openpgp: don't generate PubKeyAlgoRSASignOnly keys
  > acme/autocert: include rejected hostname in TLS handshake error when host not configured
  > ssh/testdata: correct typo
  > ssh: fix typo in error message
  > openpgp: split up tests and keys
  > openpgp: allow RSA/ECDSA signers to return a pointer
  > openpgp: test subkeys with sub-optimal signature packet ordering
  > openpgp: use latest subkey binding signature
  > openpgp: move addUserID outside of ReadEntity
  > openpgp: don't treat extra subkey selfsigs as uid sigs
  > ssh: don't panic if a key is too short.
  > acme/autocert: clarify that multiple names are allowed
  > chacha20poly1305: use x/sys/cpu feature variables directly
  > openpgp/clearsign: add ability to sign with more than one key.
  > chacha20poly1305: add some more XChaCha20-Poly1305 test vectors.
  > acme/autocert: fix race in test.
  > ssh: RFC5208 support PKCS#8 key
  > chacha20poly1305: add example for NewX
  > chacha20poly1305: add XChaCha20-Poly1305
Submodule src/golang.org/x/net a46301530...65e2d4e15:
  > http2/h2demo: fix the HTTP/1-vs-HTTP/2 demo after HSTS breakage
  > html: update inSelectIM and inSelectInTableIM for the latest spec
  > html: make (*nodeStack)contains distinguish namespace
  > http2: Revert a closed stream cannot receive data
  > trace: tighten the check for duplicate registration
  > route: update package docs
  > route: fix TestRouteMessage
  > proxy: support socks5h scheme in proxy URL
  > ipv4, ipv6: directly initialize ctlOpts and sockOpts
  > ipv4, ipv6: drop support for macOS 10.7 and earlier
  > route: add support for freebsd/arm64
  > internal/nettest: drop causesIPv6Crash
  > publicsuffix: hold icann-ness until wildcards fully match
  > publicsuffix: add comments on the icann return value
  > internal/socket: use correct cmsg alignment for openbsd/arm
  < [release-branch.go1.11] http2: don't leak streams on broken body
  > http2/hpack: track the beginning of a header block
  > http2/h2c: Add missing error check
  > http2: revert Transport's strict interpretation of MAX_CONCURRENT_STREAMS
  > http2: confirm the test fix for golang/go#28762 was correct
  > internal/socket: use libc calls on darwin
  > route: use libc calls on Darwin
  > context/ctxhttp: remove Go 1.6 support, use std context
  > http2: disable TLS 1.3 in failing test temporarily(?)
  > internal/socket: simplify nested if-blocks
  > webdav: remove Go 1.6 support, use std context
  > trace: remove Go 1.6 support
  > http2: don't leak streams on broken body
  > internal/socket: update zoneCache on cache misses to cover appearing interfaces
  > icmp, ipv4, ipv6: re-adjust build constraints
  > http2/h2i: re-adjust build constraints
  > icmp: fix InterfaceIdent.Index handling
  > Revert "icmp: fix ExtendedEchoRequest extension object"
  > icmp: fix ExtendedEchoRequest extension object
  > http2: remove support for Go 1.8 and earlier
  > http2: fix typos
  > internal/nettest: add AIX operating system
  > publicsuffix: update table to latest list from publicsuffix.org
  > bpf: support JumpIf on RegX instead of K
  > route: don't run NET_RT_IFLIST vs. NET_RT_IFLISTL test in 386 emulation (again)
  > route: re-adjust routing message alignment for FreeBSD 386 emulation
  > html: remove unnecessary namespace checking
  > all: fix typos in comments
  > html: add missing special elements for <svg> and <math>
  > html: don't set im if <template> doesn't have HTML namespace
  > html: avoid panic even if unconsidered <isindex> and <template> combination
  > internal/socks: fix socket descriptor leakage in Dialer.Dial
  > html: add more comments to Parse and ParseFragment
  > html: fix wrong comparison in foster parenting algorithm
  > html: copy passed tests from chromium
  > html: handle end-of-file cases correctly
  > http2: reduce init-time work & allocations
  > html: remove special procedure for <template> in frameset im
Submodule src/golang.org/x/sys 98c5dad5d..3b5209105:
  > unix: add ClockGettime on darwin/amd64
  > unix: update zsysnum_darwin_amd64 for macOS 10.14
  > unix: require GOOS be set in mksyscall
  > unix/linux: update Dockerfile to glibc 2.29 and Go 1.12beta2
  > windows: Implement WaitForMultipleObjects
  > unix: set 100644 mode on mksyscall_aix_ppc64.go
  > unix: add RND* ioctl consts on Linux
  > cpu: detect RDRAND and RDSEED instructions on x86
  > unix: add ioctl wrappers to get and set RTC time on Linux
  > unix: fix misspellings
  > unix: regenerate sysnum files for freebsd/arm64 and netbsd/arm64
  > unix: use glibc release branch in Dockerfile
  > unix: replace "mksyscall_aix_ppc64.pl" script with a Go program
  > unix: add socket error queue constants and types from linux/errqueue.h
  > unix: add netbsd/arm64 files.
  > unix: use int8 for RawSockaddrUnix.Path on linux/riscv64
  > unix: use Renameat2 to implement Renameat on linux/riscv64
  > unix: add Renameat on dragonfly
  > unix: add Signalfd on linux
  > unix: add ClockNanosleep and TIMER_ABSTIME
  > unix: get *BSD syscalls.master files using HTTPS
  > unix: replace "mksyscall_aix_ppc.pl" script with a Go program
  > cpu: add linux/ppc64x
  > plan9: replace "mksyscall.pl" with Go program
  > unix: make Fcntl* routines use libSystem on Darwin
  > plan9: remove "use" function and calls from generated code.
  > unix/linux: update Dockerfile to Linux Kernel 4.20
  > unix: add support for freebsd/arm64
  > unix: fix Fstatat by using fillStat_t on linux/mips64x
  > unix: mksysnum: correct +build restriction
  > unix: replace mksysnum_*.pl scripts with Go program
  > unix: generate linux/sparc64 go files using Docker
  > unix: fix unused import in syscall_darwin_386.go
  > unix: add space to generated code
  > unix: reverse default for 1.11/1.12 split
  > unix: add Sendfile test
  > unix/linux: set 100644 mode on mksysnum.go
  > unix: remove raw syscall from Sendfile
  > unix: remove raw syscall from getAttrList
  > unix: remove raw syscall from getattrlistTimes
  > unix: remove raw syscall from Getfsstat
  > unix: remove Getdirentries on iOS
  > unix: avoid "64"-postfixed libSystem calls on iOS
  > unix: convert Darwin syscalls from raw to libSystem
  > unix: update Dockerfile to Go 1.12beta1
  > windows/svc: use wevtutil.exe instead of powershell for windows/arm
  > windows: use netevent.dll in TestFormatMessage for windows/arm
  > unix: remove Flock syscall for aix
  > unix: add SyncFileRange on linux/arm
  > unix: evaluate cmsg alignment in cmsgAlignOf at compile time
  > unix: use correct cmsg alignment for openbsd/arm
  > unix: regenerate ztypes for openbsd/arm
  > unix: always use fstatat(AT_SYMLINK_NOFOLLOW) over lstat on AMD64
  > unix: always use inotify_init1 over inotify_init on AMD64
  > unix: avoid index out of range in Vmsplice with empty iovs
  > cpu: add linux/arm64
  > unix/linux: replace "mksysnum.pl" script with a Go program
  > unix: replace "mksyscall.pl" script with a Go program
  > unix: rework TestGetwd to handle test dirs whose names contain symlinks
  > unix: add IoctlSetPointerInt
  > unix: add ioctl definitions for PPP interfaces.
  > unix: add sockaddr and defines for PPPoE sockets.
  > unix: export FdSet bits field on freebsd
  > unix: add IoctlGetPtmget on netbsd
  > unix: test UtimesNanoAt on darwin
  > unix: don't use deprecated sys/capability.h header on FreeBSD
  > unix: fix errors in syscalls when using -linkshared on ppc64x
  > unix: avoid index out of range in *setxattr on BSD
  > unix: add remaining *at functions on dragonfly
  > unix: add remaining *at functions on netbsd
  > unix: add remaining *at functions on openbsd
  > unix: add Readlinkat on openbsd
  > unix: add Openat on dragonfly
  > unix: add Openat on netbsd
  > unix: allow to pass a NULL pointer to the pledge syscall
  > unix: add kernel module load/unload syscalls on Linux
  > unix: add support for OpenBSD unveil(2)
  > unix: use ppoll to implement Pause on linux/{arm64,riscv64}
  > unix: add Openat on openbsd
  > unix: add Ppoll on openbsd
  > unix: update Dockerfile to Linux 4.19
  > unix: don't use local syscall number in Pledge()
  > unix: FreeBSD 12 ino64 support
  > unix: update syscall numbers to OpenBSD 6.4
  > unix: add SOF_TIMESTAMPING_* flags on Linux
  > unix: add support for aix/ppc64, gc implementation
  > unix: add marker comments to zsyscall_solaris_amd64.go
  > unix: convert errorList and signalList to new format for linux/sparc64
  > unix: add KexecFileLoad on linux/{amd64,ppc64x,s390x}
  > unix: export sizeof consts
  > unix: use correctly aligned result buffer in SysctlClockinfo
  > unix: add SysctlUvmexp on OpenBSD
  > unix: re-add vm.* sysctl strings on openbsd/amd64
  > unix: add NCSI generic netlink constants
  > unix: add ClockGetres on Linux
  > unix: add SysctlClockinfo on NetBSD
  > unix: fix TestSchedSetaffinity for smt settings
  > unix: add additional rlimit resource constants on NetBSD
  > unix: add MNT_* flags on OpenBSD
  > windows: add support for windows/arm
  > unix: add MNT_* flags on DragonflyBSD
  > unix: add MNT_* flags on NetBSD
  > unix: implement Linux AF_XDP sockets
  > unix: add more RTA_* constants on Linux
  > unix: add Termio, Winsize, Statfs_t, TC[GS]ET, Mkdir and Mknod for AIX
  > unix: change MemfdCreate flags parameter to int for all GOARCHes
  > unix: add MemfdCreate on Linux
  > unix: correct misspelling in test output
  > windows: correct misspelling in comment
  > unix: add remaining RTA_* constants for use with rtnetlink on Linux
  > unix: add support for linux/riscv64
  > unix: add SYNC_FILE_RANGE_* constants on Linux
  > unix: correct argument order for SyncFileRange syscall on linux/ppc64{,le}
  > Revert "unix: implement SyncFileRange for ARM"
  > unix: implement SyncFileRange for ARM
  > windows: add support for AF_UNIX sockets
  > unix: update Dockerfile to Go 1.11
  > unix: code for AIX ppc and ppc64, for gccgo
  > unix: add UBI ioctl constants on Linux
  > unix: use pipe2 syscall on FreeBSD instead of pipe
  > unix: add additional file mode bit constants from sys/stat.h on Solaris
  > unix: add example for Flock
  > unix: add NOSTD syscall numbers on FreeBSD
  > unix: add additional file mode bit constants from sys/stat.h on FreeBSD
  > unix: add additional file mode bit constants from sys/stat.h on DragonflyBSD
  > windows: add Wincrypt.h Cert related values
  > unix: update Dockerfile to Linux 4.18, glibc 2.28 and Go 1.11beta3
Submodule src/golang.org/x/text cb6730876..e6919f657:
  > internal/export/unicode: copy unicode/maketables.go
  > message/pipeline: fix type switch case order
  > unicode/norm: bug fix in Iter
  > unicode/norm: correct use of ErrShortDst
  > language: improve docs for Parent
  > all: fix typos
  > x/text: add go.mod and go.sum files
  > message/catalog: fix usage of plural in docs
  > message/pipeline: don't panic if message not imported
  > unicode/norm: move sync.Once check out of loop
  > cmd/gotext: fix "go format failed: invalid argument"
  > encoding: regenerate tables
  > unicode/norm: lazy load recompMap from string
Submodule src/golang.org/x/tools b4b6fe2cb..49d818b07:
  > [release-branch.go1.12] cmd/godoc: fix -url flag, add tests
  > internal/lsp: fix crash caused by lack of TypeSizes from go/packages.Load
  > internal/lsp: type-check packages from source
  > internal/lsp: add support for analyzers with dependencies on other analyzers
  > go/packages: fix broken tests to handle changes to packagestest
  > internal/lsp: connect basic analysis functionality
  > go/packages: use strings.EqualFold in sameFile to handle case-insensitive file systems
  > internal/lsp/cmd: fix a nil pointer and some minor clean-up
  > internal/lsp, go/packages/packagestest: support testing test files
  > internal/lsp: add additional logging for go/packages failures
  > internal/lsp: handle escaping URIs for files in the module cache
  > internal/lsp: use interface for diagnostics code
  > godoc: remove leading tabs while formatting text
  > cmd/stringer: type check using export data
  > cmd/guru: remove Go 1.9 handling, since we no longer support 1.8
  > internal/lsp: do not return nil identifiers without errors
  > internal/lsp/diff: fix sources listed for diff implementation
  > internal/lsp: rank types higher when completing in return of a function
  > Revert "go/analysis/passes/atomicalign: handle pointers to struct"
  > internal/lsp: implement diff for computing text edits
  > cmd/tip: delete
  > internal/lsp/cmd: add the definition mode
  > go/analysis/passes/atomicalign: handle pointers to struct
  > godoc/static: update static.go
  > go/internal/gcimporter: write export data for go/types
  > godoc/static: inherit textarea color to avoid illegible text
  > imports: drop anything after a non identifier rune in package names
  > godoc/short: point to new tracking issue for shortlink creation
  > imports: update zstdlib to Go 1.12
  > go/packages: rename name= query and "disable" it
  > go/vcs: remove go.googlesource.com vcsPath entry
  > cmd/heapview: delete
  > cmd/godoc: add x/xerrors redirect
  > internal/lsp: refactor definition and hover to share functionality
  > go/packages: stop parsing files if the context is canceled
  > go/analysis/passes/composite: add an example to the doc
  > cmd/gopls/integration: git ignore temporary vscode files
  > godoc/dl: add julieqiu to validUser
  > cmd/present: fix CSS when printing slides
  > cmd/tip: also fetch x/net repository before building cmd/godoc
  > imports: stop using go/packages for modules
  > internal/lsp: do not complete inside comments in functions
  > go/analysis/internal/checker: correct comment grammar
  > go/analysis/passes/atomicalign: add atomicalign ckecker
  > imports: remove globals, stop using build.Default
  > imports: don't eagerly guess package names

Co-authored-by: Nick Wei <nwei@pivotal.io>

Fixes golang/go#28762

Change-Id: I8d8b74cd8836bbed3116b334f6595225a8f0a36e
Reviewed-on: https://go-review.googlesource.com/c/151619
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>