Fixing a bunch of issues with Catalyst.

The issues are:
1) When setting immediate mode rendering on, I need
to check if Catalyst has that proxy definition first.

2) Catalyst base edition had the module names for
Catalyst and PythonCatalyst wrong and I fixed them.

3) For Catalyst builds I need to make the vtkPVCatalyst
module depend on vtkCommonCore in order to properly wrap
its code.

4) I excluded vtkCPCxxHelper from being wrapped. I'm pretty
sure that this doesn't need to be wrapped.

Change-Id: I6aaf0c63f29e6d3655ddca4cf16c178f379b0bd9
Merge topic '13853_catalyst_immediate_mode_rendering2' into next

a81dee7 Fixing a bunch of issues with Catalyst.