Bug#671302: Circular Build Dependencies (was Bug#671302: libav: circular dependency between libav and opencv)

[Fabian Greffrath]

> libav -> x264 -> libav

AFAICT the x264 frontend uses libav whereas libav uses the libx264 shared
library. So theortically (!) this issue could be solved by two separate
source packages for the x264 frontend and the library.

 - Fabian