Merge commit 'c43a7eca'

* commit 'c43a7eca':
  lavfi: remove now unused args parameter from AVFilter.init

Conflicts:
	libavfilter/avfilter.c
	libavfilter/buffersrc.c
	libavfilter/f_select.c
	libavfilter/src_movie.c
	libavfilter/vf_alphamerge.c
	libavfilter/vf_drawtext.c
	libavfilter/vf_lut.c

Not merged (yet) because there are still many filters that use the args
parameter.
Merged-by: Michael Niedermayer <michaelni@gmx.at>