1) New general mechanism to avoid dump of functors not used later as arguments
2) Use the New general mechanism to filters and sub-meshes
3) Erase the 1st incarnation of re-created objects.
A re-created object appears e.g. as follows:
- create a mesh
- remove the mesh
- save and re-open the study
- create another mesh -> ( two meshes have same Entry ) == ( the 1st mesh is re-created )
1) Do not erase "mesh.Compute()" command if the next command
"[ group1, group2 ] = mesh.GetGroups()" dumps groups created by some algorithm.
2) Clear "mesh.RemoveGroup( group )" command
3) Clear "[ group1, group2 ] = mesh.GetGroups()" command if the groups
are removed later.