Merged unicode-support back into trunk. Now all GUI/visible strings should be unicode. Internal strings unchanged. Remember to use a font that actually has the desired codepoints. Current default unicode policiy is 'ignore'.

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