[tsan] Recognize frames coming from "libclang_rt.tsan_*" module as internal

On OS X, we build a dylib of the TSan runtime, which doesn't necessarily need to contain debugging symbols (and file and line information), so llvm-symbolizer might not be able to find file names for TSan internal frames.  FrameIsInternal currently only considers filenames, but we should simply treat all frames within `libclang_rt.tsan_osx_dynamic.dylib` as internal.  This patch treats all modules starting with `libclang_rt.tsan_` as internal, because there may be more runtimes for other platforms in the future.

Differential Revision: http://reviews.llvm.org/D14813

llvm-svn: 253559