[compiz] Window specific actions and edge buttons

[Mike Dransfield]

There is a problem with some window specific actions like
scale_group and rotate_with_window when they are activated
by an edgebutton.

The basic problem is that each of those actions use the window
option provided to the action.  When an edgebutton is used the
window id sent is actually the id of the edge window, this means
that actions which rely on this stop working.

The obvious solution would be to change the affected functions
to work on the active window rather that the one passed to the
action.

It could also be possible to modify the actions higher up to ignore
edge windows, but I suppose some people might want that
functionality.