final patchlet for external filters.
final patchlet for external filters.

svn path=/trunk/kdenetwork/kmail/; revision=49860

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