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Add a few items to news
Core
- VOBSUB subtitle now supported in MP4 files (Note: Limited Player compatibility)
- AC3 encoding support.
- Improved DVD Main Feature detection (when using dvdnav)
- Universal audio downmix support (all audio types can be downmixed)

All GUIs
- Peak framerate option (Capped VFR)
- Point-to-Point encoding (second or frame start and end times)

Mac GUI
- VLC detection in /Applications and ~/Applications

Linux GUI
- Multiple instance support (run multiple copies of ghb at once)

git-svn-id: svn://localhost/HandBrake/trunk@3734 b64f7644-9d1e-0410-96f1-a4d463321fa5