* qatar/master:
  dxa: remove useless code
  lavf: don't select an attached picture as default stream for seeking.
  avconv: remove pointless checks.
  avconv: check for get_filtered_frame() failure.
  avconv: remove a pointless check.
  swscale: convert hscale() to use named arguments.
  x86inc: add *mp named argument support to DEFINE_ARGS.
  swscale: convert hscale to cpuflags().

Conflicts:
	ffmpeg.c
	libswscale/x86/scale.asm
Merged-by: Michael Niedermayer <michaelni@gmx.at>