Hello r (cc: golang-dev@googlegroups.com), I'd like you to review this change.
*** Submitted as http://code.google.com/p/go/source/detail?r=41d37c2440fb *** libc: add goos, goarch, goroot. fixes build TBR=r CC=golang-dev http://codereview.appspot.com/190059
LGTM