code review 121520043: go.sys: update package names

go.sys: update package names
Semi-automatic migration from package syscall to package {plan9,windows,unix}.
No builds attempted yet, but this gets a lot of noise behind us so subsequent
CLs will be more concise and easier to follow.
Subsequent CLs will have semantic content.

[r, 2014-08-11 22:38:58]

Hello golang-codereviews@googlegroups.com (cc: rsc@golang.org),

I'd like you to review this change to
https://code.google.com/p/go.sys

[rsc, 2014-08-11 22:46:32]

LGTM

[r, 2014-08-11 22:56:24]

*** Submitted as
https://code.google.com/p/go/source/detail?r=6a09d4d5dbf2&repo=sys ***

go.sys: update package names
Semi-automatic migration from package syscall to package {plan9,windows,unix}.
No builds attempted yet, but this gets a lot of noise behind us so subsequent
CLs will be more concise and easier to follow.
Subsequent CLs will have semantic content.

LGTM=rsc
R=golang-codereviews, rsc
CC=golang-codereviews
https://codereview.appspot.com/121520043