* Change: In Hurricane::CellWidget, new "isPrinter" attribute to know if
the CellWidget is used as a device for printing.
New function copyExtensionsGos() to duplicate the ExtensionGo drawing
callbacks. This is a temporary hack until the ExtensionGo are made static
to be shared by all CellWidgets.
In _redraw(), the DrawingQuery flags were not correctly reset between
different stage of the drawing. This was resulting of uneeded walkthough
of the slicing tree, along with incorrect display of some of the layers
(i.e. rubbers where diplayeds when ExtensionGos where active).
* Change: In GraphicKatanaEngine, fine tune the display of GCells for printing
CellWidget.
* Change: In Hurricane::CellPrinter, copy all the settings from the palette
of the reference (graphic) CellWidget into the printer CellWidget.
Also copy the ExtensionGos callbacks so we can print them. Use the
new CellWidget attribute "isPrinter" for the callbacks to be able
to adapt to Printer settings.
* Change: In Hurricane::Time::getStringTime(), only print two decimals
for time durations.
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