osx: clean up includes, we do not need cocoa what we *do* need is the very basics that animia already depends on anyway. these are basically guaranteed to be on any macos system, making it fairly portable now... I haven't tested this :) I don't have a macos machine right now...

<?xml version="1.0"?>
<mesh name="mesh_root">
	<!-- here is a mesh node -->
	some text
	<![CDATA[someothertext]]>
	some more text
	<node attr1="value1" attr2="value2" />
	<node attr1="value2">
		<innernode/>
	</node>
</mesh>
<?include somedata?>