Revert "adjust number of damage events we wait from 2 to 1"
Revert "adjust number of damage events we wait from 2 to 1"

This reverts commit e04ea28e6079de4a9a815d09f78752149468ee16.

It didn't meet people's likings.  (Clock still needs a different
fudge-factor, though.)

Conflicts:
	src/mcompositewindow.cpp
(cherry picked from commit f83f27d55700c4a1f5f0b0ce9d16350143fbe675)

nemomobile-graveyard/mcompositor,nemomobile-graveyard/mcompositor,nemomobile-graveyard/mcompositor,nemomobile-graveyard/mcompositor,nemomobile-graveyard/mcompositor,nemomobile-graveyard/mcompositor