minidlna:
 * correct ffmpeg #include's (xy.h -> livav.../xy.h)
 * remove compatibility ffmpeg include paths from CPPFLAGS to avoid problems caused by multiple same-named headers
 * fix log.h #include (log.h from ffmpeg was used instead of minidlna's one)
 * refs #1985
 * all fixes by MaxMuster


git-svn-id: file:///var/svn/freetz/trunk@9923 149334a1-2f27-0410-a3b9-fc62619ac1e6