Re: Patch RFA: Support for building Go tools

[Ian Lance Taylor]

Committed initial gotools patch with following ChangeLog entries:

./:

2015-01-09  Ian Lance Taylor  <i...@google.com>

        * configure.ac (host_tools): Add gotools.
        * Makefile.def (host_modules): Add gotools.
        (dependencies): Add dependency of all-gotools on all-target-libgo.

gcc/go/:

2015-01-09  Ian Lance Taylor  <i...@google.com>

        * config-lang.in (lang_dirs): Define.

gotools/:

2015-01-09  Ian Lance Taylor  <i...@google.com>

        * Initial implementation.