Fixed missing computation of element orientation in SU2_DOT.
Fixed missing computation of element orientation in SU2_DOT.

drewkett/SU2,hlkline/SU2,drewkett/SU2,drewkett/SU2,drewkett/SU2,drewkett/SU2,hlkline/SU2,hlkline/SU2,hlkline/SU2,srange/SU2,srange/SU2,hlkline/SU2,srange/SU2,srange/SU2