pixfmt: mark the reserved values
jpeg2000: fix dereferencing invalid pointers during cleanup

CC: libav-stable@libav.org
Found-by: Laurent Butti <laurentb@gmail.com>
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
h264: error out from decode_nal_units() when AV_EF_EXPLODE is set

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Merge commit 'ab72eda15e98197cf148abc08574206cfde0d9b0'

* commit 'ab72eda15e98197cf148abc08574206cfde0d9b0':
  pixfmt: mark the reserved values

Conflicts:
	libavutil/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '10306e9c5fcc28bd9310a9b38f21540e9e1433e9'

* commit '10306e9c5fcc28bd9310a9b38f21540e9e1433e9':
  jpeg2000: fix dereferencing invalid pointers during cleanup

Conflicts:
	libavcodec/jpeg2000.c

See: 09927f3eaa93e31dd90ab8ee66dc1ad867b3365f
See: 912ce9dd2080c5837285a471d750fa311e09b555
See: 9e477a37703318cb86d8ed1d426929235aa02b67
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '772d150a6e82542c06b0c251e73dd299d98d1027'

* commit '772d150a6e82542c06b0c251e73dd299d98d1027':
  h264: error out from decode_nal_units() when AV_EF_EXPLODE is set

Merged-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/h264: do not leave ret random on minor failures, causing major failure

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