PARMG cleanup, write out deformationfunction to a file, Continue the trustregionsolver with a smaller trustregion radius in case of an exception

• Clean up PARMG compiler-flags
• Write out the deformation to a file; this can then be read by dune-gfe
• Continue the trustregionsolver with a smaller trustregion radius in case of an exception @oliver.sander_at_tu-dresden.de: Can you have a look?

src/finite-strain-elasticity.cc

@@ -84,7 +84,7 @@ int main (int argc, char *argv[]) try
   Python::runStream()
         << std::endl << "import sys"
         << std::endl << "import os"
-        << std::endl << "sys.path.append(os.getcwd() + '/../../problems/')"
+        << std::endl << "sys.path.append(os.getcwd() + '/../../../../dune/dune-gfe/problems/')"
         << std::endl;
 
   typedef BlockVector<FieldVector<double,dim> > SolutionType;