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Updated  release instructions

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

updated NEWS