- updated nolibtooltest patch for current avifile

- updated nolibtooltest patch for current avifile
- updated etc_dir patch to current policy (s/ETC_DIR/HOME_DIR/, leave dots)
- added system-libmad patch (but something is wrong with .mp3 files in this
  avifile version, it doesn't even load mad plugin)
- disabled building lame3.70 plugin, one using newer system libmp3lame is enough
- removed useless *.la for plugins
- removed bogus, no longer existing vidix-nvidia package

Changed files:
    avifile-etc_dir.patch -> 1.2
    avifile-nolibtooltest.patch -> 1.2
    avifile-system-libmad.patch -> 1.1
    avifile.spec -> 1.150