The bulk mesh property must be set on the newly created
meshes. The bulk mesh is not available upon the mesh construction
and it is simpler to set the property afterwards, than
to pass it through two function calls.

This also allows to remove the _geoObjects member from the ProjectData.

The boundary condition is not used in any test so far
and the physical interpretation of that BC is difficult
at least.

The removal greatly simplifies few things.

The Dirichlet BC is still available.

First version of constraint boundary conditions

[A/U] Restrict the reset of the property to a material id.

Minor fix in TwoPhaseFlowWithPP process

Cleanup

Similar functions used by DE are in the DataHolderLib/Project.

New versions of logog do not have an implicit ; after the macros.