Auto-turn on fast graphics

[Frank]

Instead of posting a recommendation, who wants the detector to be automatic with a message that tells how to turn the feature off?
Change

Code:

{message('Try turning on "Fast graphics" in the Tools menu for faster performance.');t._fastGraphicsWarning=true;}

To

Code:

{message('Fast graphics turned on. You may switch back to normal graphics in the Tools menu.');
SequencerView.fastGraphics=true;t._fastGraphicsWarning=true;}

Also, nice throwback to the original OS.