For final output files create them with mode 0664 to match other compilers and expected defaults.
For final output files create them with mode 0664 to match other
compilers and expected defaults.

Part of rdar://11325849

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@156592 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/clang,llvm-mirror/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,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,llvm-mirror/clang