vdr-addon: vdr-plugin-femon

@stefansaraev
i've added femon plugin to the vdr addon.
it compile well at least here but didn't had time to test it inside the clientspecific part of VNSi4

FernetMenta mentioned it here http://forum.xbmc.org/showthread.php?tid=158684&pid=1401209#pid1401209 some time ago so i think it could be usefull.

EDIT: just tested and it works!