Backport r883812 by tmcguire from trunk to the 4.1 branch:

Merged revisions 883319 via svnmerge from
svn+ssh://tmcguire@svn.kde.org/home/kde/branches/kdepim/enterprise4/kdepimlibs

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r883319 | mutz | 2008-11-12 18:21:34 +0100 (Wed, 12 Nov 2008) | 1 line

Interpret GPGME_STATUS_ALREADY_SIGNED as an error, independant of state. Fixes "General Error" returned when trying to sign an already signed UID again with the same key.

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svn path=/branches/KDE/4.1/kdepimlibs/; revision=883862