Backport r961646 by tmcguire from trunk to the 4.2 branch:
Backport r961646 by tmcguire from trunk to the 4.2 branch:

Merged revisions 960990 via svnmerge from 
svn+ssh://tmcguire@svn.kde.org/home/kde/branches/kdepim/enterprise4/kdepim

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  r960990 | winterz | 2009-04-29 14:36:05 +0200 (Wed, 29 Apr 2009) | 10 lines
  
  Merged revisions 960937 via svnmerge from 
  https://svn.kde.org/home/kde/branches/kdepim/enterprise/kdepim
  
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    r960937 | mlaurent | 2009-04-29 06:14:59 -0400 (Wed, 29 Apr 2009) | 3 lines
    
    Minor optimization
    not send "emit changed()" if we don't add new string
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svn path=/branches/KDE/4.2/kdepim/; revision=964277

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