Fix compile error on arm4/arm5 platform

Since these commits
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=adf8227cf4e7b4fccb2ad88e1e09b6dc00dd00ed
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=db7f1c7c5a1d37e7f4da64a79a97bea1c4b6e9f8

compilation on arm4/arm5 fails:

libavcodec/libavcodec.so: undefined reference to
`ff_startcode_find_candidate_armv6'

Because libavcodec/arm/Makefile contains
ARMV6-OBJS-$(CONFIG_STARTCODE)         += arm/startcode_armv6.o
function ff_startcode_find_candidate_armv6 is not included for older ARM
archs. The bug was found during automatic buildroot builds:

http://autobuild.buildroot.net/results/ec7/ec71e4f16ee9106747dff5f15999cbd17903e76f//build-end.log
Quote from configure summary:
ARCH                      arm (armv4t)
big-endian                no
runtime cpu detection     yes
ARMv5TE enabled           no
ARMv6 enabled             no
ARMv6T2 enabled           no

http://autobuild.buildroot.net/results/be7/be72eb182eaccf0064a32c9dfc2ac1c0d6555506/build-end.log
ARCH                      arm (armv5te)
big-endian                no
runtime cpu detection     yes
ARMv5TE enabled           yes
ARMv6 enabled             no
ARMv6T2 enabled           no

This patch provides the necessary #if clauses as discussed with Michael:
https://ffmpeg.org/pipermail/ffmpeg-devel/2014-September/163329.html

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Merge remote-tracking branch 'cus/stable'

* cus/stable:
  ffplay: move pts calculating code to generic decoder
  ffplay: factorize decoder functions to generic decoder
  ffplay: handle fullscreen status on resize event

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Skip decklink_common_c.h when running make checkheaders.
tests/fate-run.sh: Cat .err file in case of error with V>0

This may make fate failures where only the console output is available
easier to analyze

Suggested-by: Andreas Cadhalpun
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/libvpxdec: don't check for formats other than i420 when vp9 decoding is disabled

Should fix ticket #3958.

Reviewed-by: James Zern <jzern@google.com>
Signed-off-by: James Almer <jamrial@gmail.com>
x86/videodsp: fix warning about discarded 'const' qualifier

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>
hevc: remove unneeded buffer.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
hevc: move intermediate bidir buffer

Other buffers are already there.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
configure: support --disable-sdl

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
configure: reindent the --disable-sdl related code

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
configure: fail if SDL is unavailable and --enable-sdl is specified

Reviewed-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
configure: Check if "-D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600" is needed for localtime_r()

Fixes build with musl

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
rtpdec_hevc: Drop a duplicated, nonstandard entry

The RFC spec draft only specifies the "H265" name - there is no
specification saying how to interpret "HEVC" (if such a packet
format is specified it could be an entirely different format).

Since this is a very new standard (still a draft), there is little
need for compatibility with existing, broken implementations. Therefore
remove the extra alias, to avoid the risk of encouraging incorrect
usage.

Intentionally keeping the ff_hevc_dynamic_handler name for the
handler, to use "hevc" consistently as name for the codec instead
of "h265" within the library internals as long as there only is one
single variant in actual use.

Signed-off-by: Martin Storsjö <martin@martin.st>
ffplay: use av_codec_get_pkt_timebase()

Reviewed-by: Benoit Fouet <benoit.fouet@free.fr>
Reviewed-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
postproc: add basic deblock filter visualization support

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
doc/APIchanges: fix typo

Found-by: ubitux
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'c463dfc7e49929a9891884312b23b27d14729c51'

* commit 'c463dfc7e49929a9891884312b23b27d14729c51':
  rtpdec_hevc: Drop a duplicated, nonstandard entry

Merged-by: Michael Niedermayer <michaelni@gmx.at>
libavformat/avidec: Make unchanged function arguments const

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
libavformat/avienc: Make unchanged function arguments const

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
libavformat/dv: Make unchanged function arguments const

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