lavc: move put_bits_left in put_bits.h
wmapro: make sure there is room to store the current packet

Prevent horrid and hard to trace struct overwrite.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
wmapro: return early on unsupported condition

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
wmapro: check num_vec_coeffs against the actual available buffer

Prevent yet another buffer overwrite.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Merge commit 'afe03092dd693d025d43e1620283d8d285c92772'

* commit 'afe03092dd693d025d43e1620283d8d285c92772':
  lavc: move put_bits_left in put_bits.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'e30b068ef79f604ff439418da07f7e2efd01d4ea'

* commit 'e30b068ef79f604ff439418da07f7e2efd01d4ea':
  wmapro: make sure there is room to store the current packet

The check is replaced by an assert as it is impossible to occur
See: 780d45473c32fa356c8ce385c3ea4692567c3228

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '6652338f43ef623045912d7f28b61adea05d27ae'

* commit '6652338f43ef623045912d7f28b61adea05d27ae':
  wmapro: return early on unsupported condition

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

* qatar/master:
  wmapro: check num_vec_coeffs against the actual available buffer

Conflicts:
	libavcodec/wmaprodec.c

The check is replaced by an assert.

See: b21ba20cc83c80fe56192fee3626a8087f37d806

Merged-by: Michael Niedermayer <michaelni@gmx.at>
doc/muxers: sort muxers by name
doc/muxers: apply various minor fixes to segment documentation
Avoid a null pointer dereference on oom when decoding vc1.

Fixes ticket #2723.