cmdutils: Print a more sensible message in show_filters() w/o libavfilter

Also avoid an unused variable warning for compilers w/o av_unused support.
fate: Add tests for RealAudio 1.0 (14.4) and RealAudio 2.0 (with 28.8)

Signed-off-by: Diego Biurrun <diego@biurrun.de>
apetag: Fix APE tag size check

The size variable is (correctly) unsigned, but is passed to several functions
which take signed parameters, such as avio_read, sometimes after having
numbers added to it. So ensure that size remains within the bounds that
these functions can handle.

CC: libav-stable@libav.org
Signed-off-by: Diego Biurrun <diego@biurrun.de>
Merge commit '2dd09ebf5597fd5e4a573bee9cccf21ae821f286'

* commit '2dd09ebf5597fd5e4a573bee9cccf21ae821f286':
  cmdutils: Print a more sensible message in show_filters() w/o libavfilter

Conflicts:
	cmdutils.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
avfilter: remove obsolete FF_API_FILL_FRAME cruft

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
Merge commit '44caf99ecae7bc1b907fab849ecaa72dd340ba2e'

* commit '44caf99ecae7bc1b907fab849ecaa72dd340ba2e':
  fate: Add tests for RealAudio 1.0 (14.4) and RealAudio 2.0 (with 28.8)

Conflicts:
	tests/fate/real.mak

Merged-by: Michael Niedermayer <michaelni@gmx.at>
fate: disable fate-ra4-288, the code uses floats and does not produce the same results on different platforms

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'c5560e72d0bb69f8a1ac9536570398f84388f396'

* commit 'c5560e72d0bb69f8a1ac9536570398f84388f396':
  apetag: Fix APE tag size check

Merged-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/x86/vp9lpf: Always include x86util.asm

Fixes executable stack

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