add parsing of the custom CMS c++11 attributes cms::ThreadSafe and cms::ThreadGuard("guard var name")
add -Wno-attributes to squelch gcc's warning 'scoped attribute directive ignored'
Merge pull request #289 from gartung/llvm-3.3-cms-custom-cxx11-attrs

add parsing of the custom CMS c++11 attributes cms::ThreadSafe and cms::...