Merge commit 'df903683'

* commit 'df903683':
  truemotion2: return meaningful error codes.
  tscc: remove some pointless comments and empty lines.
  tscc: return meaningful error codes.
  loco: cosmetics, reformat

Conflicts:
	libavcodec/truemotion2.c
	libavcodec/tscc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>