cmake HAVE_GTK2 examples

RasPlex/OpenPHT plex/Update-Installer/src/CMakeLists.txt :18

add_definitions(-DHAVE_GTK2)

navit-gps/navit CMakeLists.txt :663

endif(HAVE_GTK2 AND NOT MSVC)

muse-sequencer/muse src/muse/CMakeLists.txt :48

endif(HAVE_GTK2)

muse-sequencer/muse src/muse/CMakeLists.txt :379

endif(HAVE_GTK2)