cxa_guard.cpp didn't quite make it on the last commit:  Restricted headers to cxa_guard.cpp and abort_messsage.h, and added a comment regarding reentrancy brought up by John McCall.  Thanks John.
cxa_guard.cpp didn't quite make it on the last commit:  Restricted headers to cxa_guard.cpp and abort_messsage.h, and added a comment regarding reentrancy brought up by John McCall.  Thanks John.

git-svn-id: 6a9f6578bdee8d959f0ed58970538b4ab6004734@148965 91177308-0d34-0410-b5e6-96231b3b80d8

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