Add simple tool for comparing gdf files
Merge pull request #21 from Xarthisius/gdfdiff

Add simple tool for comparing gdf files
[multigrid_gravity] Only master should warn
[decomposition] Print level id in messages
[decomposition] Adjusted message positions
[multigrid_gravity] edited messages
[multigrid_gravity_helper] fixed message
Merge pull request #22 from gawrysz/cosmetics

Cosmetics