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".
diff --git a/Demo/sgi/video/VFile.py b/Demo/sgi/video/VFile.py
index bb9857f..d6c9fc4 100755
--- a/Demo/sgi/video/VFile.py
+++ b/Demo/sgi/video/VFile.py
@@ -21,10 +21,10 @@
 try:
 	import gl
 	import GL
+	import GET
 	no_gl = 0
 except ImportError:
 	no_gl = 1
-import GET
 import colorsys
 import imageop