Subzero: Add a makefile config for building with g++.

Subzero: Add a makefile config for building with g++.

This way, the g++ build for the "make presubmit" target gets a separate build directory, and gets to use ccache.

Also, get rid of the "git diff" test, because uncommitted changes are already checked by "git cl upload" and "git cl land".

BUG= none
R=jpp@chromium.org

Committed: https://gerrit.chromium.org/gerrit/gitweb?p=native_client/pnacl-subzero.git;a=commit;h=fc22f770aba94a485d27acbf1a5acc73487f9e54

[Jim Stichnoth, 2015-11-22 06:15:44]

Description was changed from

==========
Subzero: Add a makefile config for building with g++.

BUG= none
==========

to

==========
Subzero: Add a makefile config for building with g++.

This way, the g++ build for the "make presubmit" target gets a separate build
directory, and gets to use ccache.

BUG= none
==========

[Jim Stichnoth, 2015-11-22 06:16:49]

stichnot@chromium.org changed reviewers:
+ jpp@chromium.org, kschimpf@google.com, sehr@chromium.org

[Jim Stichnoth, 2015-11-22 06:25:39]

Description was changed from

==========
Subzero: Add a makefile config for building with g++.

This way, the g++ build for the "make presubmit" target gets a separate build
directory, and gets to use ccache.

BUG= none
==========

to

==========
Subzero: Add a makefile config for building with g++.

This way, the g++ build for the "make presubmit" target gets a separate build
directory, and gets to use ccache.

Also, get rid of the "git diff" test, because uncommitted changes are already
checked by "git cl upload" and "git cl land".

BUG= none
==========

[John, 2015-11-22 14:02:51]

lgtm

[Jim Stichnoth, 2015-11-22 14:06:40]

Committed patchset #2 (id:20001) manually as
fc22f770aba94a485d27acbf1a5acc73487f9e54 (presubmit successful).