jpeg2000: enable 4 component pixel formats

Bug-Id: 721
CC: libav-stable@libav.org
Sample-Id: 31230.mov
configure: Include the armcc build number in the compiler identification

This tries to find the most expressive part of the output of
armcc --vsn to include, giving a compiler identification of
"ARM Compiler 5.04 update 2 (build 82)" instead of just
"ARM Compiler 5.04" for armcc 5.0.

4.x versions of armcc output the following, for "armcc --vsn":
ARM C/C++ Compiler, RVCT4.0 [Build 925]
For evaluation purposes only
Software supplied by: ARM Limited

ARM C/C++ Compiler, 4.1 [Build 894]
For evaluation purposes only
Software supplied by: ARM Limited

5.0 versions output this:
Product: ARM Compiler 5.04
Component: ARM Compiler 5.04 update 2 (build 82)
Tool: armcc [5040081]
For evaluation purposes only
Software supplied by: ARM Limited

Signed-off-by: Martin Storsjö <martin@martin.st>
Merge commit 'cbc808d726afdf53d866264722785c1304c17390'

* commit 'cbc808d726afdf53d866264722785c1304c17390':
  jpeg2000: enable 4 component pixel formats

See: f0358dc1d30cd4f4862489ab95c4d408b00a8b0d
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'ed6d9ce914d552eeda16af857da97c4b1aea1e3f'

* commit 'ed6d9ce914d552eeda16af857da97c4b1aea1e3f':
  configure: Include the armcc build number in the compiler identification

Merged-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/dca: Make ff_dca_convert_bitstream() available to libavformat, needed for dts_probe()

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avformat/dtsdec: check more of the dca headers in dts_probe()

Fixes misdetection of 664461_flac_16_44100_2.wav
Fixes Ticket3830

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