<rdar://problem/13338743> Fix sandbox profile preprocessor flags for compatibility with new clang.

        Reviewed by Alexey Proskuryakov.
        Patch by Bob Wilson.

        * DerivedSources.make: Only use -traditional when we have to work around old
        behavior of -std=c89.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@145267 268f45cc-cd09-0410-ab3c-d52691b4dbfc