Image: ongoing work on branching images
- corrected branching image converter 
- added some specific engines (to be used in coarse hexa FEM),
-  homogeneized API with regular image

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9666 b7f1a160-662a-0410-a6d8-bea165342f16
Flexible: ongoing work on branching images. Hexa FEM are working. Meshless models not yet..

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9667 b7f1a160-662a-0410-a6d8-bea165342f16
VectorOperations: added realloc to allocate vectors only in new mechanical states (without modifying already allocated ones). Can include the allocation of external mechanical states linked by an InteractionForceField.
VectorOperations::v_free: Possibility to free allocated vectors on external mechanical states linked by an InteractionForceField.
VecId: removed constant solverSolution id.
EulerImplicitSolver: keep the current solution (for warm-start) in a vector with a dynamic id (rather that a constant fixed id). Not to have conflict with sub-graphes governed by their own implicit solver but linked by an interactionForceField.

TODO: never allocate vectors for external mechanical states linked by an InteractionForceField but handle them as null vectors on a abstract way.

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9668 b7f1a160-662a-0410-a6d8-bea165342f16
fix image: bug in branchingImage introduced in previous commit

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9669 b7f1a160-662a-0410-a6d8-bea165342f16
[FIX] [ARTEFACTS STUDIO] A macro with the same name of the variable was leading to compilation problems

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9670 b7f1a160-662a-0410-a6d8-bea165342f16
fixed compil

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9671 b7f1a160-662a-0410-a6d8-bea165342f16
fixed warning

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9672 b7f1a160-662a-0410-a6d8-bea165342f16
Compliant: added RigidMass display

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9673 b7f1a160-662a-0410-a6d8-bea165342f16
Compliant: computed SO(3) log instead of Sp(3)

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9674 b7f1a160-662a-0410-a6d8-bea165342f16
Compliant: trying to fix strange link errors

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9675 b7f1a160-662a-0410-a6d8-bea165342f16
Compliant: fixed acceleration-level dynamics inconsistencies.

git-svn-id: svn://scm.gforge.inria.fr/svnroot/sofa/trunk@9676 b7f1a160-662a-0410-a6d8-bea165342f16