In SMESH_subMesh::ComputeStateEngine() transform errors into warnings if it is caused by mesh edition
Regression of SALOME_TESTS/Grids/smesh/2D_submesh_00/A7
fix SMESH_subMesh::cleanDependsOn()
Regression of SALOME_TESTS/Grids/smesh/imps_02/C4
fix getSubMeshes() in SMESH_subMesh_i.cxx and use it in all cases
Regression SALOME_TESTS/Grids/smesh/mesh_Projection_2D_01/B1
In StdMeshers_Projection_2D treat coincident nodes in all cases
This case also reveals the following bugs:
1) SMESH_MesherHelper::IsReversedSubMesh() incorrectly works on
a coarsely meshed disk
2) Addition of NETGEN-1D2D3D removes already computed faces of a
sub-mesh on a group of FACEs (SMESH_subMesh::cleanDependsOn())
3) Volumes are shown, instead of faces, when displaying a sub-mesh on
a SOLID with only a 2D algo assigned to the sub-mesh (SMESH_subMesh_i.cxx)
