Shifted control over CMAKE_INSTALL_LIBDIR to user
Shifted control over CMAKE_INSTALL_LIBDIR to user

melven/tixi,DLR-SC/tixi,melven/tixi,DLR-SC/tixi,melven/tixi,melven/tixi,DLR-SC/tixi,DLR-SC/tixi,melven/tixi,DLR-SC/tixi