Enable C++11 and later warnings based on CMAKE_CXX_STANDARD too.
Enable C++11 and later warnings based on CMAKE_CXX_STANDARD too.

offa/cpputest,basvodde/cpputest,offa/cpputest,basvodde/cpputest,cpputest/cpputest,basvodde/cpputest,basvodde/cpputest,cpputest/cpputest,cpputest/cpputest,offa/cpputest,cpputest/cpputest,offa/cpputest