doc: Fix some obsolete references to av* tools as ff* tools

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

CC: libav-stable@libav.org
x86: dsputil: int --> ptrdiff_t for ff_put_pixels16_mmxext line_size param

This avoids SIMD-optimized functions having to sign-extend their
line size argument manually to be able to do pointer arithmetic.

Signed-off-by: Diego Biurrun <diego@biurrun.de>
x86: dsputil: Fix h263 loop filter link error in some configurations

This was caused by unconditionally referencing a conditionally compiled
table. Now the code is also compiled conditionally.

Signed-off-by: Diego Biurrun <diego@biurrun.de>
lavfi/overlay: yuv444p & yuva444p support

Signed-off-by: Paul B Mahol <onemda@gmail.com>
tmv: initialize unused pallete entries with 0

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Merge commit '202b5f6deb65e405b07b9b5c20f97c8cb925cf49'

* commit '202b5f6deb65e405b07b9b5c20f97c8cb925cf49':
  doc: Fix some obsolete references to av* tools as ff* tools

Conflicts:
	doc/demuxers.texi

No code changes, merge for metadata only

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '7a03145ed7cb4f1ce794b5126559dd6f38029243'

* commit '7a03145ed7cb4f1ce794b5126559dd6f38029243':
  x86: dsputil: int --> ptrdiff_t for ff_put_pixels16_mmxext line_size param

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  x86: dsputil: Fix h263 loop filter link error in some configurations

Conflicts:
	libavcodec/x86/dsputil.asm

Merged-by: Michael Niedermayer <michaelni@gmx.at>
x86/h263_loopfilter: Fix author attribution after code has been moved/splited around

    Reference:
    commit 3615e2be846f6382aa42360d02d16b25f443af9f
    Author: Michael Niedermayer <michaelni@gmx.at>
    Date:   Tue Dec 2 22:02:57 2003 +0000

        h263_h_loop_filter_mmx

        Originally committed as revision 2553 to svn://svn.ffmpeg.org/ffmpeg/trunk

    commit 359f98ded95ec65f7109b25f3cfaa9189c4fab9c
    Author: Michael Niedermayer <michaelni@gmx.at>
    Date:   Tue Dec 2 20:28:10 2003 +0000

        h263_v_loop_filter_mmx

        Originally committed as revision 2552 to svn://svn.ffmpeg.org/ffmpeg/trunk
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avfilter/ff_merge_formats: only merge if doing so does not loose chroma or alpha

Fixes Ticket1280

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