Prevent the -save-temps flag from modifying the input file if the input filename conflicts with a to be produced temp filename. rdar://9724657
Prevent the -save-temps flag from modifying the input file if the input filename
conflicts with a to be produced temp filename.
rdar://9724657

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@135308 91177308-0d34-0410-b5e6-96231b3b80d8

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