Converted most of Albany_ExtrudedSTKMeshStruct class to Tpetra.
The class still has the Epetra_Comm object and does some operations based on it
(e.g., SummAll, Broadcast, etc.).  I have concerns about converting these because
long long ints are declared (and in general about the long long ints that appear in this
class.  Will it cause problems for Tpetra branch when we declare GO, LO?  I have tested
that the code compiles when 64 bit int build of Albany is turned on.)  Need
to talk to Mauro / have Mauro look at this function.  Are long long ints necessary?