Update user CN on user modifications
Merge branch '3.2' into scabrero/samba-update-user-cn

Conflicts:
	main/samba/ChangeLog
Merge branch '3.2' into scabrero/samba-update-user-cn

Conflicts:
	main/samba/ChangeLog
Merge pull request #778 from Zentyal/scabrero/samba-update-user-cn

Update user CN on user modifications