WinGui: Initial work to refactor the Audio and Subtitle behavioural based automatic track selections. This is not quite complete yet but close enough for gathering feedback.
- Simplified UI design that's now available on the "Subtitle" and "Audio" tabs rather than the Options screen.
  The settings are no longer part of the app preferences. They are now per-preset. Build in presets default to None.
- Selected Languages can now be set independently for Audio and Video.
- Preferred Language is now part of the Selected Languages list.
- Warning: Import/Export of presets still to be implemented.  Design may yet change.






git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6036 b64f7644-9d1e-0410-96f1-a4d463321fa5