[vtkusers] Add another module in Tcl

[Gheorghe Postelnicu]

Hi,

I am building a small application in VTK and I would prefer keeping my
interface in a script language, but I need to do some computation
somewhere in my module. For that, I think the best thing to do is to
create a library that would be in the VTK_AUTOLOAD_PATH. The VTK
User's Guide contains an example of such factory.

However, there is no mention on how to compile this library in order
for it to be available for VTK Tcl scripts.

Any examples or pointers on how to do this would be greatly appreciated.

Thanks,
-- 
Gheorghe Postelnicu, PhD
MGH, Harvard Medical School