cmd/api: work with gccgo

[robpike]

And use it to track the two implementations stay in sync.

[bradfitz]

Comment 2:

Some little hacks to the cmd/api tool to make it work for the syscall package (in Issue
1790) are here:
http://golang.org/cl/5776044/diff/2001/src/cmd/api/goapi.go
But the general fix and making it just work and find the right files by default with
gccgo is trickier and I don't really understand why it doesn't work.

[ianlancetaylor]

Comment 3:

Labels changed: added priority-later, removed priority-go1.

[rsc]

Comment 4:

Labels changed: added go1.1.

[rsc]

Comment 5:

Labels changed: added size-m.

[rsc]

Comment 6:

Labels changed: added suggested.

[rsc]

Comment 7:

This would be nice to have, but I don't think we'll have it for Go 1.1.

Labels changed: removed go1.1.

[rsc]

Comment 8:

[The time for maybe has passed.]

[rsc]

Comment 9:

Labels changed: added go1.2maybe.

[ianlancetaylor]

Comment 10:

This isn't a release issue.

Labels changed: removed go1.2maybe.

[rsc]

Comment 11:

Labels changed: added go1.3maybe.

[rsc]

Comment 12:

Labels changed: added release-none, removed go1.3maybe.

[rsc]

Comment 13:

Labels changed: added repo-main.