access, connect, socket.

In Android-L, logging is done by writing the log messages to the logd
process through a unix domain socket.

Also, changed the arg types of those syscall stubs to match linux
programming APIs.

For #10743

Change-Id: I66368a03316e253561e9e76aadd180c2cd2e48f3
Reviewed-on: https://go-review.googlesource.com/15993
Reviewed-by: David Crawshaw <crawshaw@golang.org>

Android linker does not handle TLS for us. We set up the TLS slot
for g, as darwin/386,amd64 handle instead. This is disgusting and
fragile. We will eventually fix this ugly hack by taking advantage
of the recent TLS IE model implementation. (Instead of referencing
an GOT entry, make the code sequence look into the TLS variable that
holds the offset.)

The TLS slot for g in android/amd64 assumes a fixed offset from %fs.
See runtime/cgo/gcc_android_amd64.c for details.

For #10743

Change-Id: I1a3fc207946c665515f79026a56ea19134ede2dd
Reviewed-on: https://go-review.googlesource.com/15991
Reviewed-by: David Crawshaw <crawshaw@golang.org>

For #10743

Change-Id: Iec047821147a0e28edebf875fefe25993785702b
Reviewed-on: https://go-review.googlesource.com/15994
Reviewed-by: David Crawshaw <crawshaw@golang.org>

For #10743 #10807

Change-Id: I35dedb52e2b47fe7ffc655d01f22ac05fe830bde
Reviewed-on: https://go-review.googlesource.com/16396
Reviewed-by: David Crawshaw <crawshaw@golang.org>

3x the stripped ndk size - still smaller than the full NDK archive
(400MB vs 120MB)

Update golang/go#10743

Change-Id: I38e2abb01c64d38adbb5de55347ad92a9031aba6
Reviewed-on: https://go-review.googlesource.com/17502
Reviewed-by: David Crawshaw <crawshaw@golang.org>

These tar.gz include x86, x86_64 tools and libraries.
This CL will be submitted once the files are available from dl servers.

Updates golang/go#10743

Change-Id: I4dd59221f392d6daf4d13ab7af38d01b8e6f4546
Reviewed-on: https://go-review.googlesource.com/17560
Reviewed-by: David Crawshaw <crawshaw@golang.org>

This does not change the tool's behavior.

The global ndkConfig 'ndk' holds info on all supported architectures
with the latest Go and gomobile tools (tip), and provides Root and
Toolchain methods that returns the current NDK installation directory
and the toolchain info depending on the GOPATH and the current go
version.

The global androidEnv is a map from arch name to the env vars.

ndkccpath is replaced by ndk.Root.

For golang/go#10743

Change-Id: I70d8e7b3e9979836112eb82d50c468df4f4ab43f
Reviewed-on: https://go-review.googlesource.com/17720
Reviewed-by: David Crawshaw <crawshaw@golang.org>

init command installs std for all the architectures supported by the
current go tool version (as listed in androidEnv).

build and bind commands pass the list of architectures to the underlying
functions. The list is currently hard-coded []string{"arm"}. In a
separate CL, the list will be populated from the -target flag value.

Still targets arm devices only.

For golang/go#10743

Change-Id: I62b5899859e76ad78a2dc55111e87aa13a68a1f9
Reviewed-on: https://go-review.googlesource.com/17749
Reviewed-by: David Crawshaw <crawshaw@golang.org>

Not updated the doc yet.

Not useful for iOS yet.

For golang/go#10743

Change-Id: Iaffc41af2c876aa5889c44aae459241af9ec206e
Reviewed-on: https://go-review.googlesource.com/17580
Reviewed-by: David Crawshaw <crawshaw@golang.org>

For golang/go#10743

Change-Id: I374fae9d6e0a7926b26647fe462968df3c0e3298
Reviewed-on: https://go-review.googlesource.com/17679
Reviewed-by: David Crawshaw <crawshaw@golang.org>

For golang/go#10743

Change-Id: Iec047821147a0e28edebf875fefe25993785702b
Reviewed-on: https://go-review.googlesource.com/15994
Reviewed-by: David Crawshaw <crawshaw@golang.org>

For golang/go#10743 golang/go#10807

Change-Id: I35dedb52e2b47fe7ffc655d01f22ac05fe830bde
Reviewed-on: https://go-review.googlesource.com/16396
Reviewed-by: David Crawshaw <crawshaw@golang.org>

forked from https://golang.org/cl/20434

- added app/internal/callfn package update.

- changed hashes.go because -for some reason- the generated hashes don't match.

- build_androidapp.go had to be changed to deal with openal package.

Fixes golang/go#10743

Change-Id: Iaa3f55d80c5fd184338d27832dc5c90cb772bd6a
Reviewed-on: https://go-review.googlesource.com/20707
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Reviewed-by: Elias Naur <elias.naur@gmail.com>

forked from https://golang.org/cl/20434

- added app/internal/callfn package update.

- changed hashes.go because -for some reason- the generated hashes don't match.

- build_androidapp.go had to be changed to deal with openal package.

Fixes golang/go#10743

Change-Id: Iaa3f55d80c5fd184338d27832dc5c90cb772bd6a
Reviewed-on: https://go-review.googlesource.com/20707
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Reviewed-by: Elias Naur <elias.naur@gmail.com>