bug 5165: 'sa-update --checkonly' added to check for updates without applying them; thanks to <anomie /at/ users.sourceforge.net>
bug 5165: 'sa-update --checkonly' added to check for updates without applying them; thanks to <anomie /at/ users.sourceforge.net>

git-svn-id: e9fe9b84e32fc5e57b7d09c40cd78b14ea28ed71@470935 13f79535-47bb-0310-9956-ffa450edef68

apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin