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

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>get-task-allow</key>
	<false/>
</dict>
</plist>