Use temporary files for this test, to see if we can flush out an inexplicable error on Windows
Use temporary files for this test, to see if we can flush out an inexplicable error on Windows

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@113493 91177308-0d34-0410-b5e6-96231b3b80d8

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