FFmpeg bundling exception for XBMC

[Kevin Kofler]

Ken Dreyer wrote:
> Alex Lancaster recently pointed out that XBMC upstream has completely
> removed the option to use an external FFmpeg.
> 
> https://github.com/xbmc/xbmc/pull/4005

Then it needs to be patched to revert these commits, or parts of them. It 
shall be noted that it is NOT necessary to use their "DLL loader" 
(presumably a cross-platform wrapper around dlopen) to load FFmpeg (the main 
stuff they removed), it is enough to link the system shared library 
directly. So the actual CODE does not need to be any different than for 
static linking, only the build setup needs to link the shared library.

        Kevin Kofler