Merge pull request #1 from tbole/iag

First files for mesh readin and HDF5.
Revert "First files for mesh readin and HDF5."
Merge pull request #2 from fhindenlang/revert-1-iag

Revert "First files for mesh readin and HDF5."
Merge pull request #1 from fhindenlang/iag

Iag