- removed access/rtp plugin (merged in access/udp).
- removed codec/imdct and codec/downmix plugins (deprecated).
- libvlc0-devel provides libvlc-devel.
- mmx/3dn plugins are only for x86 arch (use %ifarch %ix86 to list them)
  ie. fix rpm building on ppc thx Olivier Thauvin <olivier.thauvin@aerov.jussieu.fr>