cmake CXX_HAS_XCXX examples

torch/DEPRECEATED-torch7-distro exe/lua/CMakeLists.txt :81 

CHECK_CXX_COMPILER_FLAG("-x c++" CXX_HAS_XCXX)

torch/DEPRECEATED-torch7-distro exe/lua/CMakeLists.txt :86 

ENDIF(CXX_HAS_XCXX)