Use Tweener.registerSpecialPropertyModifier to handle moving windows in
straight lines on the screen even while their parent workspaces are also
moving.
Have the remove buttons track their parent workspace scale and deal with
it automatically rather than having special cases in each Workspace method.
svn path=/trunk/; revision=157
Can't close over loop variables in that way; need to define an explicit var.
Also fix case where no title is defined yet when attempting to adjust.
svn path=/trunk/; revision=154
The icon+text is useful in order to distinguish between windows
that might look similar otherwise.
The implementation is not optimal:
* We create a new texture from the pixmap each time
http://bugzilla.gnome.org/show_bug.cgi?id=563406
svn path=/trunk/; revision=129
