Update CMake scripts to work with the restructured repository.
A new CVS repository was created on 2006-03-22 to re-organize the
ParaQ source tree into a layout similar to that of ParaView 2.x and
drop the Tcl/Tk GUI. This was in preparation for the final transition
to the Qt-based GUI as the official ParaView 3.0 GUI. This commit was
manufactured during conversion from CVS to represent the layout change
as part of the first commit to the new repository.