swr: check channel layouts before using them.

Fixes out of array accesses

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 21cd905cd44a4bbafe8631bbaa6021d328413ce5)

Conflicts:

	libswresample/swresample.c
MAINTAINERS: mention that people are welcome to pick up and maintain older releases

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 7e1efeb5707ec0fec000d42fa9f2861bab97bd8f)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Do not read strd chunk in avi files as H264 extradata.

Fixes ticket #2561.
(cherry picked from commit 231b3317184790b6be4b4619d96fd328f13aeabb)
Dont strip ... there no pole dude
link ass with -lm
Link fdk-aac with -lm
Link opencv with -lopencv_core

Conflicts:
	configure
Conflicts in rebase from 1.0 resolved