lavfi: make AVFilterContext export filter options.
lavfi: add avfilter_get_class().

Useful for examining options, the same as the corresponding functions
for the other libs.
lavfi: add a bump and docs entries for the AVOptions switch
af_channelmap: fix uninitialized variable use introduced in ba8efac977f4276f05274947b2b67d144cbc965a
x86inc: Fix number of operands for cmp* instructions

cmp{p,s}{s,d} instructions do take an imm8 operand.

Signed-off-by: Diego Biurrun <diego@biurrun.de>
dsputil: Make square put/avg_pixels functions local to h264qpel

Put a copy of the 8bit functions only in dsputil, where they are
used for some other things (e.g. mpeg4qpel, mspel, cavsqpel).

Signed-off-by: Martin Storsjö <martin@martin.st>
h264: Clear the mb members via memset instead of using dsputil

Signed-off-by: Martin Storsjö <martin@martin.st>
Merge commit '4d1f31ea44f82adfb2b712534d71e27233a4f785'

* commit '4d1f31ea44f82adfb2b712534d71e27233a4f785':
  lavfi: make AVFilterContext export filter options.

Conflicts:
	libavfilter/avfilter.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
lavfi: restore mixed short/long option support with the new system.

process_unnamed_options() is renamed to process_options() and its code
is heavily based on av_opt_set_from_string().
Merge commit '8114c101607843a86960bd3e0e9c40487dc2a961'

* commit '8114c101607843a86960bd3e0e9c40487dc2a961':
  lavfi: add avfilter_get_class().

Conflicts:
	libavfilter/avfilter.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge remote-tracking branch 'ubitux/lavfi-mixed-short-long'

* ubitux/lavfi-mixed-short-long:
  lavfi: restore mixed short/long option support with the new system.

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '2e81acc687e64d15dd93c74793060bb5a233f44d'

* commit '2e81acc687e64d15dd93c74793060bb5a233f44d':
  x86inc: Fix number of operands for cmp* instructions
  af_channelmap: fix uninitialized variable use introduced in ba8efac977f4276f05274947b2b67d144cbc965a
  lavfi: add a bump and docs entries for the AVOptions switch

Conflicts:
	Changelog
	doc/APIchanges
	libavfilter/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '6d25c9db11e87ec58652de6588448225137b0c57'

* commit '6d25c9db11e87ec58652de6588448225137b0c57':
  dsputil: Make square put/avg_pixels functions local to h264qpel

Conflicts:
	libavcodec/dsputil.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'e8cafd2773bc56455c8816593cbd9368f2d69a80'

* commit 'e8cafd2773bc56455c8816593cbd9368f2d69a80':
  h264: Clear the mb members via memset instead of using dsputil

Conflicts:
	libavcodec/h264.c

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