tests: Stop mangling '-vg' into the triple, we don't use this currently.  - Also, lit is going to get a valgrind feature, instead.
tests: Stop mangling '-vg' into the triple, we don't use this currently.
 - Also, lit is going to get a valgrind feature, instead.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@166301 91177308-0d34-0410-b5e6-96231b3b80d8

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