Make the regular expressions in this test more narrow to ensure we're actually matching the write substrings, and stop looking for a leading '/' to try and finish fixing darwin and other hosts.
Make the regular expressions in this test more narrow to ensure we're
actually matching the write substrings, and stop looking for a leading
'/' to try and finish fixing darwin and other hosts.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@150938 91177308-0d34-0410-b5e6-96231b3b80d8

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