idct: Convert IDCT permutation #defines to an enum

Also rename the enum values to be consistent with other DCT permutations.
idctdsp: prettyprinting cosmetics
libgsm: Split decoder and encoder

Signed-off-by: Diego Biurrun <diego@biurrun.de>
x86: dnxhdenc: Eliminate some unnecessary ifdefs
dct-test: Skip indirection for MMX IDCT permutation
Merge commit 'b4987f72197e0c62cf2633bf835a9c32d2a445ae'

* commit 'b4987f72197e0c62cf2633bf835a9c32d2a445ae':
  idct: Convert IDCT permutation #defines to an enum

Conflicts:
	libavcodec/idctdsp.c
	libavcodec/x86/cavsdsp.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '8b0dd4942aac320d1ca3c40fa7ea1be342c71273'

* commit '8b0dd4942aac320d1ca3c40fa7ea1be342c71273':
  idctdsp: prettyprinting cosmetics

Conflicts:
	libavcodec/idctdsp.c
	libavcodec/ppc/idctdsp.c
	libavcodec/x86/idctdsp_init.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'b4edbe9a0eb48423fbf249b0ca7fb62838bdb7f5'

* commit 'b4edbe9a0eb48423fbf249b0ca7fb62838bdb7f5':
  libgsm: Split decoder and encoder

Conflicts:
	libavcodec/libgsmenc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '9e0b29911f1f167381a7dbdfca68bf417b8c767b'

* commit '9e0b29911f1f167381a7dbdfca68bf417b8c767b':
  x86: dnxhdenc: Eliminate some unnecessary ifdefs

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '913fa85a2c1fcd71802f7decdef5f355e0d9c757'

* commit '913fa85a2c1fcd71802f7decdef5f355e0d9c757':
  dct-test: Skip indirection for MMX IDCT permutation

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Write valid free atom when -moov_size is specified.

Fixes ticket #3769.
Parse dri when receiving jpg via rtp.

Based on a patch by contact at iridiummobile ru.
Fixes ticket #3780.
Ignore xing frame count if the file size is wrong.

Based on suggestions by Nicolas.
Fixes ticket #3777.
Analyzed-by: Oliver Fromme