replaced compiler matching check with a different approach (calls both compilers with -v and checks the string output) this seems much simpler and much more robust than working past xcrun, following symlinks, etc, etc.
replaced compiler matching check with a different approach (calls both compilers with -v and checks the string output)
this seems much simpler and much more robust than working past xcrun, following symlinks, etc, etc.

git-svn-id: cf55bc44fb097054a32fc70455a459c940dbbffc@6948 c9849af7-e679-4ec6-a44e-fc146a885bd3

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