make the rewriter add a #ifndef around the #define of __attribute__.
Without it, there is no reason for a compiler that supports it to
emit the dead static globals that the rewriter labels attribute(used).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101149 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed