Updated the thread safety attribute definitions to have subjects defined. These are based off what SemaDeclAttr.cpp is checking for in terms of diagnostic reporting. No functional change intended.
Updated the thread safety attribute definitions to have subjects defined. These are based off what SemaDeclAttr.cpp is checking for in terms of diagnostic reporting. No functional change intended.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@195274 91177308-0d34-0410-b5e6-96231b3b80d8

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