fix build with gas-preprocessor.pl

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Revert "swscale: disable ARM code until its build failure with clang/iphone is fixed"

This reverts commit c8c7736c1025bcf5bb27e104a0d0eae749408739.
vc1dsp: K&R formatting cosmetics

Signed-off-by: Diego Biurrun <diego@biurrun.de>
swscale: disable ARM code until its build failure with clang/iphone is fixed

See: "19:40 Yu Xiaolei Re: [FFmpeg-devel] [PATCH] fix build with gas-preprocessor.pl"

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

* qatar/master:
  vc1dsp: K&R formatting cosmetics

Conflicts:
	libavcodec/vc1dsp.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
vp9/x86: merge IDCT coef macros.
vp9/x86: remove reg redundancy in VP9_MULSUB_2W_2X.
vp9/x86: factor out some code in VP9_UNPACK_MULSUB_2W_4X.
vp9/x86: add ff_vp9_loop_filter_[vh]_16_16_ssse3().

16662 decicycles in loop_filter_h_16_16_c, 8387355 runs, 1253 skips
17510 decicycles in loop_filter_v_16_16_c, 8387516 runs, 1092 skips

4941 decicycles in ff_vp9_loop_filter_h_16_16_ssse3, 8387887 runs, 721 skips
3899 decicycles in ff_vp9_loop_filter_v_16_16_ssse3, 8387980 runs, 628 skips

Overall decode time goes from:
  ./ffmpeg -v 0 -nostats -threads 1 -i ~/samples/vp9/ped1080p.webm -f null -  8.10s user 0.02s system 99% cpu 8.126 total
to:
  ./ffmpeg -v 0 -nostats -threads 1 -i ~/samples/vp9/ped1080p.webm -f null -  6.15s user 0.04s system 99% cpu 6.199 total

(46 to 61 fps)