test/Driver/cpath.c: Escape a few args that contain %{pathsep}.
test/Driver/cpath.c: Escape a few args that contain %{pathsep}.

On msys bash, with %pathsep==os.pathsep==';', I can see lines like below in this script;

    env DIR=X:/foo%{pathsep}X:/bar

Then it is expanded to;

    env DIR=X:/foo;X:/bar

It should be with quote;

    env "DIR=X:/foo;X:/bar"

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@153402 91177308-0d34-0410-b5e6-96231b3b80d8

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