Changes from 3.22.0

Fixed a bug when doing preview from the "menu options" window (thanks to Tommydkat)

--------- TODO --------------

Allow to continue a previously failed conversion
Allow to select subtitles in MKV files
Render MKV subtitles in the Right Way(tm)
Remove v4mv
Widescreen menus
Allow to run a command after finishing a DVD
Check menu size and abort if it's zero
Use asynchronous reading in the processing of the output in Mencoder, DVDAuthor and so on
Support for a plugable menu system
Multithread support for parallel encoding
Allow to extract VOB files from DVDs
Select times for chapters
Allow for global changes to files
Create slideshows
