break focus. or maybe make it better.

break focus. or maybe make it better.
these changes make it work when you alt-tab off a fullscreen window, that it doesnt iconify, and that it is immediately restacked instead of waiting for a FocusIn event to arrive. The code now assumes that if the window says it can focus, that if we focus it, it is focused.
add the XDone handler to ObMainLoop, which is fired upon the occurance of there being no more X events to read.