Ported the editor to X. The GL version won't work.

This version needs Jack's img module and Sjoerd's new and improved (?)
X extensions for Python.

The last GL version is still available using the CVS tag "gl-editor".

Demo/sgi/video/VFile.py

@@ -21,10 +21,10 @@ import sys
 try:
 	import gl
 	import GL
+	import GET
 	no_gl = 0
 except ImportError:
 	no_gl = 1
-import GET
 import colorsys
 import imageop