* commit '45bde93e':
  sunrastenc: use the AVFrame API properly.
  targaenc: use the AVFrame API properly.
  tiffenc: use the AVFrame API properly.
  pngenc: use the AVFrame API properly.

Conflicts:
	libavcodec/pngenc.c
	libavcodec/sunrastenc.c
	libavcodec/targaenc.c
	libavcodec/tiffenc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 3ea168ed)

Author of the merged code: Anton Khirnov
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>