xrandr1.3 support: first steps (events).

xrandr1.3 support: first steps (events).

starting to implement xrandr 1.3 support, now we support all events
and their fields.

This commit also fix way that extensions register their ids and
base. The way it was, ids was being added to the last event id, that
was wrong! Fortunately, those that were wrong had just one event and
always added "0", making no harm.

git-svn-id: http://svn.enlightenment.org/svn/e/trunk/ecore@40492 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33