ACL management : pushing raw ACL xml

[Joacchim]

We should provide an option allowing to attempt pushing raw ACL to the destination.
In case of failure, fallback to push ACL in a separate file with extension .acl.
Thus, the file Test.txt would either have its acl SET, or have a joint file Test.txt.acl containing the ACL's XML.

[Joacchim]

Won't Fix :

It's aberrant to try and copy some Raw ACL from one provider to another :

• The accounts may not exist;
• The IDs won't be the same;
• The tool's user should not expect a perfect ACL reproduction : it is impossible to reproduce perfectly the ACL without the user's intervention from one provider to another.

Thus, I won't provide this functionnality, as it is as much of an aberration as the other ACL-related Issue (#9)