make negative update times work as diescribed in the documentation (-5 is NOW-5seconds)
authoroetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa>
Mon, 1 Jun 2009 13:58:58 +0000 (13:58 +0000)
committeroetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa>
Mon, 1 Jun 2009 13:58:58 +0000 (13:58 +0000)
this takes care of debian bug 332766

git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@1836 a5681a0c-68f1-0310-ab6d-d61299d08faa


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