update sdl functions to latest revision add a grayscale utility to uiimage implement a preliminary support for chatting revert rotation changes for engine lots of code cleanup restored main event loop in hwengine fix some sdl bindings

if(WIN32 AND NOT UNIX)
	file(GLOB DLLs *.dll)
	
	install(FILES
		${DLLs}
		DESTINATION bin)
endif(WIN32 AND NOT UNIX)