Optimize 3D IGA derivative calculations
Optimize 3D IGA derivative calculations

This cuts 30-50% off of simulation runtimes for me.

jwpeterson/libmesh,BalticPinguin/libmesh,jwpeterson/libmesh,libMesh/libmesh,dschwen/libmesh,libMesh/libmesh,dschwen/libmesh,jwpeterson/libmesh,BalticPinguin/libmesh,BalticPinguin/libmesh,BalticPinguin/libmesh,libMesh/libmesh,jwpeterson/libmesh,libMesh/libmesh,libMesh/libmesh,jwpeterson/libmesh,dschwen/libmesh,dschwen/libmesh,jwpeterson/libmesh,libMesh/libmesh,libMesh/libmesh,jwpeterson/libmesh,dschwen/libmesh,jwpeterson/libmesh,BalticPinguin/libmesh,BalticPinguin/libmesh,libMesh/libmesh,BalticPinguin/libmesh,dschwen/libmesh,dschwen/libmesh,dschwen/libmesh,BalticPinguin/libmesh