avconv: make -shortest work with streamcopy

CC: libav-stable@libav.org
Remove some unnecessary CONFIG_FOO_COMPONENT ifdefs

The files are only ever compiled if that condition is true.
libx265: Actually use X265_API_IMPORTS

It obvously needs to be above the include statement.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
libx265: Add 4:2:2 support

It is also not final yet, so require -strict experimental.

Requires a bump to version 17.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
libx265: Remove unneeded bit depth check

This is no longer needed since the version bump.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
configure: use pkg-config for libx264
Rename tpel_template.c ---> pel_template.c

The new name more accurately describes what the file is about.
ac3: Only initialize float_dsp for the float encoder variant
dynamic loading of shared faac library
no Werror on implicit-function-declaration and missing-prototypes
custom icon and windows resource
use upstream version tag, my repo is always rebased