* ./src/interface/interface.c: interfaces are no longer attached only to
    p_vlc.
  * ./src/libvlc.c, ./src/misc/modules.c, ./src/playlist/playlist.c,
    ./src/input/input.c: improvements in the playlist handling (not quite that
    yet though).
(ported from v0_4_1_branch)
  * ./configure.in, ./plugins/mpeg_system/mpeg_ts.c: fixed libdvbpsi handling.
  * ./src/misc/configuration.c: fixed the --nofoo option handling.
  * ./src/interface/main.c: fixed two compilation warnings under Solaris.