Fix some bugs in fat trees
small cosmetics to AsClusterFatTree::generateDotFile()
Lots of bugfixes for the fat trees, it should at least not crash when using it
Fix a compilation error regarding logging and strings in fat trees
fix error message
add rule to handle case where we want a route to router in fat trees
Basically says that all nodes may be accessed directly, here.
This may need to be changed later.
add example of a fat tree cluster platform file
Documentation ++
Add use of MSG_file_set_data and MSG_file_get_data in examples
Improve code coverage
Leak --