Reid Kleckner 2da0e325fb Revert "[Option] Store arg strings in a set backed by a BumpPtrAllocator"
This broke clang's crash-report.c test, and I haven't been able to
figure it out yet.

This reverts commit r186319.

llvm-svn: 186329
2013-07-15 16:40:52 +00:00
..