Converted new Albany_ExtrudedSTKMeshStruct class to tpetra after merge from master.

Unstructred FO GIS tests still fail, need to look into further / talk to Mauro.
Error has to do with:

Error in ExtrudedSTKMeshStruct: Number of nodes in file ../AsciiMeshes/GisUnstructFiles/surface_height.ascii (2087) is different from the number expected (0).