lavd/lavfi: upgrade to AVFrame.

Fix a memory leak because the compat implementation of
AV_BUFFERSINK_FLAG_PEEK is not identical to the previous one.
dpxenc: fix data offset

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
lavd/v4l2: silence libv4l2 logging

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
changelog: add support for Monkey's Audio versions from 3.93
dynamic loading of shared faac library
avfilters: better behavior of frei0r on win32
programs: print version info and configuration only on -version
configure: fix modplug detection (it needs +lstdc++)
no Werror on implicit-function-declaration and missing-prototypes
custom icon and windows resource
use upstream version tag, my repo is always rebased