Ignore duplicate foldernames without checking for every duplicate for subfolders.
Ignore duplicate foldernames without checking for every duplicate for
subfolders.

svn path=/trunk/kdenetwork/kmail/; revision=129716

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi