Change test to dump Filecheck output to an intermediate file.  This makes it easier to update this test.
Change test to dump Filecheck output to an intermediate file.  This makes it easier to update this test.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@170570 91177308-0d34-0410-b5e6-96231b3b80d8

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