9. F modeling

Exploded orders CALC_MATR_ELEM, FACTORISERet RESOUDRE.

Dualization and elimination of kinematic boundary conditions (AFFE_CHAR_MECA and CALC_CHAR_CINE).

Solver PETSC, CR algorithm (pre-conditioning LDLT_SP for simple precision factorization and without renumbering).

We check the export and import of PETSc vectors in a field at the nodes with the ToPetSc and FromPetSc methods.