Initially split utility.h to multiple files in util/

src/CMakeLists.txt

src/client.cpp

src/constants.h

src/debug.h

src/filecache.cpp

src/main.cpp

src/player.h

src/porting.cpp

src/server.cpp

src/sound_openal.cpp

src/subgame.cpp

src/test.cpp

src/tile.cpp

src/util/container.h

src/util/directiontables.cpp

src/util/directiontables.h

src/util/numeric.cpp

src/util/numeric.h

src/util/pointedthing.cpp

src/util/pointedthing.h