#128 Moment-of-inertia values for the selected entities using tcl in HyperMesh

#128 Moment-of-inertia values for the selected entities using tcl in HyperMesh

To get the MOI for components 1-5:

*createmark comps 1 1-5
puts [hm_getmoi comps 1]

*createmark elems 1 displayed
puts [hm_getmoi elems 1 2 $origin_node_id 2 $local_system_id 0 0]