Repent for my copy-and-paste sins, factoring out the code that forms argument packs from a set of deduced arguments, then checks that those argument packs match previously-deduced argument packs.
Repent for my copy-and-paste sins, factoring out the code that forms
argument packs from a set of deduced arguments, then checks that those
argument packs match previously-deduced argument packs.


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@123182 91177308-0d34-0410-b5e6-96231b3b80d8

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