Cleaned the basic model up. Code is cleaner now and a bit faster. Some code path were never tested in depth :-( Added a 'time_to_load' attribute to XMLMapLoader, which records the seconds it took to load a map. Down from 6s to 5.6s for reio de hola. Yay!

{
	'opengl': ['core/video/opengl/', 'core/gui/base/opengl/'],
	'zip': ['core/vfs/zip/'],
	'script-python': ['swigwrappers/python'],
	'script-lua': ['swigwrappers/lua'],
}