[[Imported from SVN: r6676]]

This is a snapshot commit.  It compiles, but I haven't actually dared
to run it yet.

[[Imported from SVN: r6675]]

[[Imported from SVN: r6674]]

[[Imported from SVN: r6673]]

[[Imported from SVN: r6672]]

[[Imported from SVN: r6671]]

[[Imported from SVN: r6670]]

[[Imported from SVN: r6669]]

[[Imported from SVN: r6668]]

Kinda stupid... but the new implementation is shorter, and it is merged into the old
method.

[[Imported from SVN: r6599]]

It was a RigidBodyMotion before, but the rotation part of that was
ignored.  Semantically it is just a position, hence a FieldVector
is better.

[[Imported from SVN: r6598]]

[[Imported from SVN: r6597]]

[[Imported from SVN: r6596]]

Only Dirichlet-Neumann is complete and appears to work, but it is
not really tested yet.

[[Imported from SVN: r6593]]

These are needed for general Steklov-Poincare methods.

[[Imported from SVN: r6592]]

set IPOpt print_level to 0 if Solver::QUIET is requested.  Negative values appear not to be allowed anymore

[[Imported from SVN: r6591]]

transpose one gradient matrix.  This makes the code run, but it still doesn't work even for RealTuple<1>

[[Imported from SVN: r6547]]

[[Imported from SVN: r6546]]

[[Imported from SVN: r6545]]

[[Imported from SVN: r6544]]

[[Imported from SVN: r6543]]

[[Imported from SVN: r6542]]

[[Imported from SVN: r6541]]

[[Imported from SVN: r6540]]

[[Imported from SVN: r6539]]

[[Imported from SVN: r6538]]

[[Imported from SVN: r6514]]

[[Imported from SVN: r6510]]

[[Imported from SVN: r6509]]

[[Imported from SVN: r6501]]

[[Imported from SVN: r6500]]

[[Imported from SVN: r6499]]

[[Imported from SVN: r6498]]

[[Imported from SVN: r6497]]

[[Imported from SVN: r6496]]

[[Imported from SVN: r6495]]

[[Imported from SVN: r6452]]

übersetzt jetzt und stürzt nicht ab.  Es kommt allerdings noch Unfug raus.

[[Imported from SVN: r6451]]

[[Imported from SVN: r6450]]

[[Imported from SVN: r6437]]