to hide the change from Client/Unmanaged and eventually also
act as the only API available to effects.
svn path=/branches/work/kwin_composite/; revision=626360
instances and keeping them around after the window is closed, create
class Deleted as a representation of a closed window.
svn path=/branches/work/kwin_composite/; revision=626356
Add support for changing window brightness.
Add DialogParent effect that makes windows that are unaccessible because
of modal dialogs darker.
Patch by Rivo Laks.
svn path=/branches/work/kwin_composite/; revision=603384
