http://llvm.org/bugs/show_bug.cgi?id=10045 .  Please review, I have not tested this on linux.
http://llvm.org/bugs/show_bug.cgi?id=10045 .  Please review, I have not tested this on linux.

git-svn-id: 756ef344af921d95d562d9e9f9389127a89a6314@132287 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx