order to flicker less (which works, but it's not really that nice yet, as
it currently only works for the background).
The workspaces layer is now also invalidated if a new window appears on the
screen or goes away (also when this happens in another workspace).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13379 a95241bf-73f2-0310-859d-f6bbb57e9c96
A view-only workspaces window support (with lots of drawing flicker) - this
means you see what happens in the workspaces, but it doesn't do anything if
you click on it.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13378 a95241bf-73f2-0310-859d-f6bbb57e9c96
