libopenjpeg: Support rgba64 encoding
libopenjpeg: Support rgba64 decoding
aarch64: float_dsp NEON assembler

Ported from arm NEON and added vector_dmul_scalar.

Functions between 1.5 and 5 times faster than the C implementations
using Apple's clang-503.0.19 on A7.
Merge commit '8f45bd1433a1d8534d7b3997219c4ca31a669042'

* commit '8f45bd1433a1d8534d7b3997219c4ca31a669042':
  libopenjpeg: Support rgba64 encoding

Conflicts:
	libavcodec/libopenjpegenc.c

See: 36397ea1c7e27ab850149cc61394c2baa26dd532
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '1b51b7ba00ed72b6ce4c3bcd6897839caa32478c'

* commit '1b51b7ba00ed72b6ce4c3bcd6897839caa32478c':
  libopenjpeg: Support rgba64 decoding

See: b7a928b2d1563575a8d9ec5aa606f735620b38ab
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  aarch64: float_dsp NEON assembler

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Add one forgotten named inline asm operand in libavcodec/x86/motion_est.c.
Add the H.264 decoder as a dependency for the fate-mkv test.