- Separated grabbing (which isn't used much!) from VFile.
- Renamed old Vcopy.py to OldVcopy.py, some cosmetic changes to it (is
  it still needed?)
- Added new Vcopy.py which does everything that Vtime.py does but also
  format conversions, image scaling, and packfactors.
- VFile: make packfactor always a tuple; introduce set and get methods
  for pf, format, and calculate some derived values.
- Added new module GET.py to std library, use it instead of defining
  DM* in VFile.
- Get rid of C programs (new Python programs can do all that they do
  and they probably don't understand the current file format anyway).
diff --git a/Demo/sgi/video/imgconv.py b/Demo/sgi/video/imgconv.py
index af6d60e..f22c06c 100755
--- a/Demo/sgi/video/imgconv.py
+++ b/Demo/sgi/video/imgconv.py
@@ -22,7 +22,7 @@
 def jpeggrey2grey(img, width, height):
 	import jpeg
 	data, width, height, bytesperpixel = jpeg.decompress(img)
-	if bytesperpixel <> 1: raise RuntimeError, 'not grayscale jpeg'
+	if bytesperpixel <> 1: raise RuntimeError, 'not greyscale jpeg'
 	return data
 
 def jpeg2rgb(img, width, height):