Better implementation of own window timers, not using ghost.
That makes blender's WM nice in control, and gives callers
of timers the opportunitie to evaluate time passed since
previous step. This system also only generates one timer
event per main loop (events - handlers - notifiers - draw)
Small fix: allow keymap modifier to give KM_ANY to ignore
modifier keys, this to have TIMER keymap work.
9e38e6aeb0