Revert "Remove xbmc"

This reverts commit 7dbf583eea1babe84f23e1ed6ff762360644e12a.
Add xbmc-12.2
xbmc: Drop unneeded patch
xbmc: Make samba support optional
xbmc: Enable internal ffmpeg (YUK)

This version of xbmc doesn't build with any newer version and ships with
an internal copy. You're warned
Add mkvtoolnix-5.9.0-r2

bzip2, lzo compression was dropped.
xz tarball now