Replace some g_error() calls by g_printerr() to prevent SIGTRAPs (Debian Bug #767584 by Simon Kainz <simon@familiekainz.at>).
Update ChangeLog.
Merge branch 'master' of github.com:DE-IBH/apt-dater
Merge pull request #57 from liske/master

Merger another bugfix by Simon Kainz.