Add a test for the display of diagnostic options and categories. This would have caught a bug I introduced during refactoring. Silly me thinking this was all well tested already...
Add a test for the display of diagnostic options and categories. This
would have caught a bug I introduced during refactoring. Silly me
thinking this was all well tested already...

If any of this is already covered by other tests, let me know. I looked
around and didn't see any.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@140522 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang