Protect Cintex structure with mutex
Protect Cintex structure with mutex

The caching of TClasses by Cintext could be updated at anytime and
therefore needs to be protected when running multi-threaded.

tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot