Modified to use 'rgbimg' instead of the SGI specific 'imgfile' for reading
the imagefiles and converting tham to a format suitable for imageop.  Also
added two more tests 'rgb2rgb8' and 'rgb82rgb' which remove the dependence
on the file 'greytest.rgb'.

Note: test_imgfile.py still uses 'greytest.rgb'
1 file changed