Cache the compiler-generated vtkTypeTemplate classname.

Rather than looking it up each time, store the classname as
a static variable in the class template.

Also disable copy/assignment for this class.

Change-Id: Idc306e3265bb4ee0d1aaa74d77b507b4a18f0a67
Merge topic 'type-template-name-cache' into master

cddcd317 Cache the compiler-generated vtkTypeTemplate classname.