Merging lifev-parallel into head.
notes: * from now on you will need trilinos instead of aztecoo * the testsuite is now broken. * the only solvers that works for now are Oseen, VenantKirchoff and fsi. * the Handler classes are now obsolete. They are superseeded by FESpace * the postprocess should come out of the solvers and the default filter is ensight. I suggest to install paraview 3.x next steps: * import trilinos in cmcsforge * clean-up the testsuite * insert mpirun in tests executions * install trilinos on cmcsforge Let lifev-dev know of any problem, please