For HTMLDiagnostics, when emitting the name of the directory, substitute the current working directory for "."
For HTMLDiagnostics, when emitting the name of the directory, substitute the current working directory for "."


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@48888 91177308-0d34-0410-b5e6-96231b3b80d8

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