[Direct Transfer] Problem with hierarchies that have several times the same folder name in the path

Several strange behaviours observed when dealing with hierarchies that several times the same names in the path.

• infinite loop
• creating some folders in the wrong place.

For instance, if you try to import the hierarchy:

• Alain
• Thierry
• Alain
  Thierry
  Alain
  ....

you will get in Nuxeo:
Alain
Thierry
Thierry
Thierry
Alain
Alain
Alain