Backport r874432 by tmcguire from trunk to the 4.1 branch:
Backport r874432 by tmcguire from trunk to the 4.1 branch:

Merged revisions 873832 via svnmerge from 
svn+ssh://tmcguire@svn.kde.org/home/kde/branches/kdepim/enterprise4/kdepim

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  r873832 | tilladam | 2008-10-20 12:10:27 +0200 (Mon, 20 Oct 2008) | 1 line
  
  Make sure to register kontact plugin interfaces as unique, on Windows, to enable the re-registration of stale services to detect them.
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svn path=/branches/KDE/4.1/kdepim/; revision=877124

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