Correctly import archives which have empty folders with subfolders.
Correctly import archives which have empty folders with subfolders.

svn path=/branches/kdepim/enterprise/kdepim/; revision=1048190

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