Default to use libc++ on OS X 10.9+ and iOS 7+.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193934 91177308-0d34-0410-b5e6-96231b3b80d8
OS X 10.9+ and iOS 7+ support load/store of big atomic objects.

rdar://13973577

Patch by Fariborz Jahanian.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193935 91177308-0d34-0410-b5e6-96231b3b80d8
Fix typo in err_flexible_array_empty_aggregate


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193936 91177308-0d34-0410-b5e6-96231b3b80d8
Fix test to actually check the FixIt-applied code

r102230 added an 'echo' making this a no-op.

Also fixes FAIL on native Windows with no shell/GnuWin32.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193938 91177308-0d34-0410-b5e6-96231b3b80d8
Merge branch 'master' of git://github.com/llvm-mirror/clang