what now happens is that configure events are skipped until the first
on-map signal is fired. seem to work fine in a variety of wm:s. if this
works well we can return active? to be plain boolean.
A UI backend can delay setting active? to 100 until the windows actually
is visible. That way, some redundant redraws that happen when the window
isn't visible is supressed. It makes the Windows and GTK UI startup a
little faster.
Björn Lindqvist
John Benediktsson