Unfortunately, this bases needs to be switched on and off using preprocessor
commands.  Hopefully I'll find a way to make that prettier in the future.

It was only in the dune-gfe module for historic reasons.

The inline expression in the parameter file that we used previously is
too short and limited.  In particular, we want to be able to use the
same expression for error measurements.  However, for that we need
a function with a derivative.

[[Imported from SVN: r10124]]

[[Imported from SVN: r10123]]

[[Imported from SVN: r10122]]

[[Imported from SVN: r10120]]

[[Imported from SVN: r10119]]

[[Imported from SVN: r10113]]

That really was a hack: the build system should do it.

[[Imported from SVN: r10111]]

[[Imported from SVN: r10110]]

[[Imported from SVN: r10109]]

[[Imported from SVN: r10108]]

[[Imported from SVN: r10107]]

[[Imported from SVN: r10106]]

[[Imported from SVN: r10104]]

[[Imported from SVN: r10103]]

[[Imported from SVN: r10102]]

[[Imported from SVN: r10098]]

[[Imported from SVN: r10096]]

[[Imported from SVN: r10095]]

[[Imported from SVN: r10094]]

[[Imported from SVN: r10093]]

Seems to be a bug in IPOpt, or in our build system

[[Imported from SVN: r10086]]

[[Imported from SVN: r10085]]

[[Imported from SVN: r10083]]

Conceptually cleaner, and makes for simpler code.  Most importantly, we will want
to pass the Basis::LocalView to the local assemblers.  For that we need the actual
basis, not just the grid view and local finite element.

[[Imported from SVN: r10082]]

[[Imported from SVN: r10081]]

At least the harmonicmaps.cc example still works as before.
[caveat: only tested without HAVE_MPI]
Internally, at various places in the code, a dune-fufem basis is still constructed
from the dune-functions one.  These parts can be ported one by one, as dune-fufem
slowly replaces its own bases by the ones from dune-functions.

[[Imported from SVN: r10080]]

This is the first step towards moving to the dune-functions bases completely.

[[Imported from SVN: r10079]]

I am puzzled that this worked at all previously.

[[Imported from SVN: r10078]]

This is needed with the cmake build system.  I do not want to
debug this today.

[[Imported from SVN: r10075]]

While we are there, set all the flags in a loop, so we don't have
to keep copying boilerplate code as the number of programs to build
increases.

[[Imported from SVN: r10074]]

Some of these Python functions are so long that you cannot reasonably keep
them in a single string in a ParameterTree entry.  To be more flexible here
the initial iterate function is now expected in a separate file.

[[Imported from SVN: r10066]]

[[Imported from SVN: r10064]]

[[Imported from SVN: r10063]]

[[Imported from SVN: r10062]]

[[Imported from SVN: r10061]]

[[Imported from SVN: r10050]]