Scooch 32/64 bit build setting up to project level

Shuts up Xcode's warning for me. Maybe other people still see it? I'm
worried this won't work out once we support iOS
Shift release of panel at end of sheet to a different spot
Avoids a crash should someone call, say, -cancel: for a second time
Merge branch 'v2.x-beta' into auth-block