Log Message:
Update kdenetwork to 3.1.3.

Changes:
* Desktop Sharing server (krfb): Fix various problem (crashes, hanging server)
  caused by port scans while the server is accepting connections
* Desktop Sharing server (krfb): Compile fix for older Solaris systems
* KMail: Fix bug 58555 (wrong filter rules in filter configuration or POP filter
  configuration dialogs)
* KMail: Fix bug 58679 (KMail crashes with a folder called "new")
* KMail: Fix bug 58814 (Subject shown as "Unknown" until selected \ 
(big5 charset))
* KMail: Display the correct folder name in the window title bar when changing
  folders with the keyboard.
* KMail: Fix bug 59195 (Selecting 'Reply-All' in KMail results in a new message
  with no recipients under certain circumstances)
* KMail: Fix bug 53009 (kmail --attach <url> does not preserve mime type in
  attachment)
* KMail: Fix bug 60304 (Deleted address still reported as email address already
  in addressbook)
* KMail: Fix bug 60508 (When receiving from maildir, cancelling the receive nukes
  the entire source maildir)
* KMail: Remove the Delete icon from the default toolbar.
* KMail: Use better background colors for signed/encrypted messages in case of a
  dark background color
* KMail: Don't add detached signature as attachment when forwarding a PGP/MIME
  signed message inline
* KMail: Fix bug 46185 (detached signature of PGP/MIME signed message is shown as
  attachment in composer when editting a signed message)
* KMail: Fix bug 59048 (remove of crypto plugin does not work)
* KMail: Fix bug 59978 (Entry in Crypto Plugin is stored even when its entry is
  empty)
* KMail: Fix bug 48686 by clearing the preview pane after all messages have been
  sent.