[vdr] update: technology preview - DVD subtiles & navigation

[Andreas Schultz <aschultz@warp10.net>]

Hi all,

The -nav3 patch had some minor problems with older gcc versions (thanks 
to Martin Hammerschmid for testing).

An update version is available at:

http://www.cs.uni-magdeburg.de/~aschultz/dvd/vdr-0.99pre1-nav4.diff.gz

changes to -nav2:
    - limited support for still picture based menues
    - direct access to (some) menues

known issues/todo:
    - video/audio distortions at the end of menu loops
    - audio track and subtitles selction menu access
      not fully implemented
    - user operations are not surpressed as directed by the DVD (this
      especialy applies to surpressing chapter skip's in menues)

The current menue spu decoding uses *only* highlighted button area, it
should use full SPU area. This causes problems with certain types of
menue (e.g., "Matrix"->Language->SubTitles).

Have fun

        Andreas