WinGui: Fix a few bugs:
- Advanced query getting nulled out for QSV due to some dead code.
- Updated the regex for the decomb value to accept unquoted value as well as quoted.
- Remapped Ctrl-F to Ctrl-O to be more standard.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5944 b64f7644-9d1e-0410-96f1-a4d463321fa5