I forgot to commit this patch to update gotools to the Go 1.5.1
library.  Already tested, now committed.

Ian

2015-10-31  Ian Lance Taylor  <iant@google.com>

* Makefile.am (go_cmd_go_files): Update to Go 1.5.1 library by
adding alldocs.go, doc.go, note.go.
* Makefile.in: Rebuild.