[vtkusers] Compile Abstract Class for Tcl

[Brad Lowekamp]

I am trying to compile an abstact class and generate the TCL bindings for 
the derived classes. I have indicated that it is an abstract class in my 
CMakeList file by adding the following option to the base myVTK file:

ABSTRACT_FILES(
myAbstractClass
)

I have tried it both with the file extention and with out. Either way the 
TCL parser tries to create a NewCommand for the class and then the 
compiler gives and error because my abstract class does not have a New 
function. This option seem to be what was uses in VTK to create an 
abstract class. What am I missing? What do I need to do to get to work?

Thanks,
Brad