changes

32位操作系统OS/2的MPEG播放机

Changes since last version:

1.1
o Fixed -dither color option to find best 24 bit or greater visual
  for most machines.
o Fixed recursive loop in Makefile. 
o Added entries for R6000 and SGI's in Makefile
o Fixed declaration of j_rev_dct.
o Does initial sequence start code check to confirm validity of mpeg stream.
o Changed or's in ordered dither to add's to allow more flexible
  allocation of color ranges.
o Uses shared memory.
o Lots of little bugs fixed.

1.2
o Fixed shared memory problem (freeing memory twice on exit).
o Added entries for Sony NEWS machines
o Added monochrome support.
o Unrolled loops for optimization.
o Variety of small bugs.

2.0
o Added ability to use private colormap.
o Display name can now be given as part of command line.
o Fixed green artifacts problem
o Fixed sequence end code cutoff problem.
o Lots of performance tweaks.
o Other bugs.