Change Log:
Add Dynamic Options to glview widget, the most difficult thing that i
had made since last version. I want thanks to Tcl team for helping me,
specially Gah, whose respond to my question.
So now!, we have one special Option the ReadOnly Option :).
Some Optimizations to widget to perform better and less Displays.
configure -load "" -> will unload the object.
the adjustment of epson4 example to new widget.