macosx: Window drawing glitch when showing/hiding some buttons
Using vlc.git, on OS X 10.8, if I toggle both "Show Previous & Next Buttons" (from off to on) and "Show Shuffle & Repeat Buttons" (from on to off), then restart VLC, the time slider overlaps with the playlist and stop buttons: http://imgur.com/Yirkf
The time slider's resize animation from the first option is interrupted by the resize operation from the second operation; using setFrame: without animation produces a correct result.