Backport r883813 by tmcguire from trunk to the 4.1 branch:

Merged revisions 883322 via svnmerge from
svn+ssh://tmcguire@svn.kde.org/home/kde/branches/kdepim/enterprise4/kdepimlibs

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r883322 | mutz | 2008-11-12 18:40:38 +0100 (Wed, 12 Nov 2008) | 1 line

Use better error codes (new in gpg-error >= 1.6)

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svn path=/branches/KDE/4.1/kdepimlibs/; revision=883863