* LA::VectorInterface
* LA::EigenDenseVector

* rename DSC_TOSTR -> DSC_FRSTR
* group toString/fromString

Conflicts:
	dune/stuff/common/profiler.cc

sum and maximum value need to be computed on _every_
process and may then be output only on rank 0.

using c++11 string conversion for special cases avoids icpc 14 bugs

* fixes #252

* Now this one is a little tricky. The problem is that we
  basically need a specialization for every combination
  of dimensions (since some functions may only be
  implemented for some dimensions).
* We now generate specialized declarations for all
  dimensions in the header.
* We also generate specialized definitions for all
  dimensions in the source and we require the
  implementer of a new functions to add the function in
  the source file.
* Adding a new function is a sub optimal task, since it
  requires some copying. This solution may not be the
  most elegant but it seemed to be *fastest*, since we
  can just copy/paste find/replace.
* Ideas and patches are welcome!

local_function still untested

* only the functionality of the function,
  not its local_function is tested

* we will have way to many lines of code for even one
  functions, so each will get its own test...

This should allow for .ccs with same name
in different dirs.

* we add the include dirs and link dirs per grid type
  depending only on the fact, that the grid was found
* we also add the libs of all found grids to GRIDLIBS
* depending on the users choice of GRIDTYPE we only
  set stuff like -DENABLE_FOO for the
  Dune::GridSelector, nothing else
All in all, this should finally allow to use different
grids in one place (e.g. lib).