MacGui: Implement per track audio settings.

MacGui: Implement per track audio settings.
- Expands the number of audio tracks the macgui can encode to 4.
- Everything except drc is now set on a per track basis
- Be Gone self limiting "Codecs" PopUp !
- Can now use any audio codecs that the container will support in the same encode
- The previous "AAC + AC3" bizarre hybrid is now deprecated and you simply set them up per track
- Implement full audio list readout in the queue, tracks are now show one per line in a list like fashion
- Queue is no longer hard coded for just two tracks.
- Preset code updated to regress to handle previous presets that utilized the codecs popup to determine audio scheme to use
- Preset code now handles everything except language selection.
- The Format, Video Encoder and Audio codes are all now stored in the appropriate NSPopUp tags for very easy retrieval.
- Crazy format, codecs struct is now gone as we get that from the tags.
- AC3 Passthru properly shows the input bitrate and 48 khz samplerate in the appropriate popups
- Added Theora video encoder to OGM container
- Added libtheora to the libhb dylib
- NOTE: The check against trying to use AC3 Passthru on a DTS track is broken on the encoder popup.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@1385 b64f7644-9d1e-0410-96f1-a4d463321fa5