Fixed a bug in the CMakeLists.txt that would cause an error when the user influences CMAKE_CXX_FLAGS manually in CMake.
Fixed a bug in the CMakeLists.txt that would cause an error when the user
influences CMAKE_CXX_FLAGS manually in CMake.

--HG--
branch : v1-8

digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre