Assert that the module hash produced after stripping away non-modular options is the same as the module hash before stripping those options.
Assert that the module hash produced after stripping away non-modular options is the same as the module hash before stripping those options.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@139663 91177308-0d34-0410-b5e6-96231b3b80d8

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