It takes an OGS mesh, converts it via VtkMappedMeshSource to VTK, then
the VTK mesh gets converted back to OGS mesh.

Remaining todo: point and cell data.

Conflicts:
	CMakeLists.txt
	Tests/CMakeLists.txt

There is lots of boilerplate code which is required, see also
https://github.com/Kitware/VTK/blob/master/IO/Exodus/vtkCPExodusIINodalCoordinatesTemplate.h

Started implementing mesh node coordinates wrapper.

Conflicts:
	CMakeLists.txt

Builds now both in CLI as well as GUI configuration.

This is using the prebuilt version from cmake.org which is 32 bit.
Therefore some 32-bit compatibility packages have to be installed
as well (but they should be cached by Travis on future builds).

Eigen/LIS system includes on top level.

Global numerics config

Math lib msvc pow

This reverts commit 14cdf0c6.

Logog target for MPI computation

new tools VTK2TIN, TIN2VTK

Add tin tools

- Checking for empty lines.
- If line (except empty lines) doesn't start with id the TIN file is not correct anymore.

Add barycentric version of point in triangle test.