Create __has_feature(cxx_noexcept) and mark it as working.
Find out that our C++0x status has only one field for noexcept expression and specification together, and that it was accidentally already marked as fully implemented.
This completes noexcept specification work.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127701 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed