CMake: use add_compiler_rt_static_runtime to build TSan and MSan runtimes. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@172978 91177308-0d34-0410-b5e6-96231b3b80d8
CMake: Add add_compiler_rt_osx_object_library to create universal libraries on Mac

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@172979 91177308-0d34-0410-b5e6-96231b3b80d8