TermProjection{Field,Grad,} known handle functions defined by a FunctionSpace and a map of (Dof, value) -- Using these in DDM formulations -- now all terms are precomputed -- Seems OK \o/

git-svn-id: https://geuz.org/svn/gmsh/trunk@17649 59c8cabf-10d6-4a28-b43f-3936b85956c4