[modules] Factor out common code to mark identifier being "from AST", and add a call in one more place to reduce the size of identifier tables in non-leaf modules. No behavior change.
[modules] Factor out common code to mark identifier being "from AST", and add a
call in one more place to reduce the size of identifier tables in non-leaf
modules. No behavior change.


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@259866 91177308-0d34-0410-b5e6-96231b3b80d8

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