MacGui: Split Picture settings for new preset up into Size and Filters and add VFR...

MacGui: Split Picture settings for new preset up into Size and Filters and add VFR to presets
- New Add preset Panel
- Now can specify how preset uses picture sizing (includes height, width, keep ar, anamorphic and cropping) separately from whether or not it uses Picture Filters (currently includes Deinterlace, Detelecine, VFR, Denoise, and Deblock (pp7) )
- Allows for greater flexibility in setting up your presets

git-svn-id: svn://localhost/HandBrake/trunk@1086 b64f7644-9d1e-0410-96f1-a4d463321fa5