- move EnumsHelper into YYCC because it is widely used. - rename all calling to EnumsHelper due to this modification. - add version checker in code to make sure that user use correct YYCC library to compile. - modify some include syntax because the include directory layout changes of YYCC. - update CMake script to resolve the bug that we can not export LibCmo (thanks doyaGu and BLumia).