[svn] Applied patch from Jim Hague: - Forget cached group info when group database closed. - Added list of 'forbidden' newsgroup specs. - Fixed problem with article numbering if the overview file empties. - Changed %i to %d in sscanfs (%i interprets leading zeros as octal numbers) - New groups now always start numbering at article 1. - Record newsgroup posting status. Enforce it at posting time. Added --modify - Added group deletion. - Added wildmat code taken from INN