tile ->layout: x=[int],
y=[int], width=[int], height=[int]Compute subtile layout and adjust objects. For tiles with
tile<-orientation
horizontal or vertical this implies setting the
tile<-area of the tile and distributing
the tile<-members
over the given area. For tiles with tile<-orientation
none (leaf-tiles) this implies setting tile<-area
and sending tile->geometry to the
controlled tile<-object.
If the tile has an tile<-adjuster, call tile->update_adjuster_position
to update the location of the small buttons to control the distribution
of stretchable subwindows.
