vf_gradfun: use the name 's' for the pointer to the private context

This is shorter and consistent across filters.
vf_hflip: use the name 's' for the pointer to the private context

This is shorter and consistent across filters.
vf_hqdn3d: use the name 's' for the pointer to the private context

This is shorter and consistent across filters.
vf_libopencv: use the name 's' for the pointer to the private context

This is shorter and consistent across filters.
vf_lut: use the name 's' for the pointer to the private context

This is shorter and consistent across filters.
vf_overlay: use the name 's' for the pointer to the private context

This is shorter and consistent across filters.
vf_pad: use the name 's' for the pointer to the private context

This is shorter and consistent across filters.
Merge commit 'd46c588f3cb1963a00e990ceaf4ba9ffa05a716d'

* commit 'd46c588f3cb1963a00e990ceaf4ba9ffa05a716d':
  Remove commented-out #includes
  h263dec: Remove broken and disabled debug cruft
  vc1: Reindent INIT_LUT(), align backslashes

Conflicts:
	libavcodec/vc1.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '9cacdabd1c8cd257a942d8289349c37d992989b7'

* commit '9cacdabd1c8cd257a942d8289349c37d992989b7':
  jpegls: cosmetics: Drop some unnecessary parentheses
  mpegvideo: Remove commented-out PARANOID debug cruft

Conflicts:
	libavcodec/jpegls.c
	libavcodec/mpegvideo.c
	libavcodec/x86/mpegvideo.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'ff4fc5ef12a37716c5c5d8928a2db92428e916ec'

* commit 'ff4fc5ef12a37716c5c5d8928a2db92428e916ec':
  jpegls: K&R formatting cosmetics

Conflicts:
	libavcodec/jpegls.c
	libavcodec/jpegls.h
	libavcodec/jpeglsdec.c
	libavcodec/jpeglsenc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'b3ea76624ad1baab0b6bcc13f3f856be2f958110'

* commit 'b3ea76624ad1baab0b6bcc13f3f856be2f958110':
  vf_aspect: use the name 's' for the pointer to the private context
  Remove commented-out debug #define cruft

Conflicts:
	libavcodec/4xm.c
	libavcodec/dvdsubdec.c
	libavcodec/ituh263dec.c
	libavcodec/mpeg12.c
	libavfilter/avfilter.c
	libavfilter/vf_aspect.c
	libavfilter/vf_fieldorder.c
	libavformat/rtmpproto.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '7f83959598b6565baa0091e5739dd9091ab7a990'

* commit '7f83959598b6565baa0091e5739dd9091ab7a990':
  vf_crop: use the name 's' for the pointer to the private context
  vf_boxblur: use the name 's' for the pointer to the private context
  vf_blackframe: use the name 's' for the pointer to the private context

Conflicts:
	libavfilter/vf_blackframe.c
	libavfilter/vf_boxblur.c
	libavfilter/vf_crop.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'ba09675f44612fad9f7169f71b8276beb50a0dcd'

* commit 'ba09675f44612fad9f7169f71b8276beb50a0dcd':
  vf_delogo: use the name 's' for the pointer to the private context
  vf_cropdetect: use the name 's' for the pointer to the private context
  vf_crop: cosmetics, break lines

Conflicts:
	libavfilter/vf_delogo.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'c0279956b3ca3e5fd0a6a25253893d6f07000e68'

* commit 'c0279956b3ca3e5fd0a6a25253893d6f07000e68':
  vf_fade: use the name 's' for the pointer to the private context
  vf_drawtext: use the name 's' for the pointer to the private context
  vf_drawbox: use the name 's' for the pointer to the private context

Conflicts:
	libavfilter/vf_drawbox.c
	libavfilter/vf_drawtext.c
	libavfilter/vf_fade.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
fate/colorchannelmixer: make sure direct path is tested.
lavfi/unsharp: use av_image_copy_plane().
lavfi/unsharp: remove unused float.h include.
mjpegdec: properly report unsupported disabled features

When JPEG-LS support is disabled the decoder would feed the
data to the JPEG Lossless decode_*_scan function resulting in
faulty decoding.

CC: libav-stable@libav.org
flacdec: drop unnecessary assert

The condition cannot happen anymore.
sparc: Eliminate dead code in VIS acceleration macros

Signed-off-by: Diego Biurrun <diego@biurrun.de>