Some buildbots were choking on std::max_align_t, try using the global alias.
Some buildbots were choking on std::max_align_t, try using the global alias.

git-svn-id: 6a9f6578bdee8d959f0ed58970538b4ab6004734@336159 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/libcxxabi,llvm-mirror/libcxxabi,llvm-mirror/libcxxabi,llvm-mirror/libcxxabi,llvm-mirror/libcxxabi