wm: Fix a leak
pixman-region-wrapper: Actually free memory we allocate
server: Ensure that children windows are finalized when the parents are
server: Don't set the root window's background color
server: Add the ability to not draw the background color

This is X's mechanism for preventing flashes.
background: Store the background image in a server-side pixmap
server: Rename old/new in CopyArea to src/dest

This is a better naming scheme.
pixman-region-wrapper: Optimize a tiny bit

Remove the amount of indirect dispatch