There was already release_extra_cflags for linux; this just generalizes it to debug_ and to mac.
There was already release_extra_cflags for linux;
this just generalizes it to debug_ and to mac.

Required a litle rearranging.  Tested by comparing
xcode and make files before and after change.

Ignores those settings when generating Visual C++ projects,
but since the goal was to let valgrind bots tweak
optimization settings, that's ok for now.
Review URL: http://codereview.chromium.org/202054

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@25997 0039d316-1c4b-4281-b951-d872f2087c98

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