bug 5820: add 'uridnssub' keyword for URIDNSBL plugin; fix URIBL_SBL to use this keyword, and thereby produce a marginal gain in efficiency for lookups on zen.spamhaus.org; thanks to Henrik Krohns for that code, added to CREDITS
bug 5820: add 'uridnssub' keyword for URIDNSBL plugin; fix URIBL_SBL to use this keyword, and thereby produce a marginal gain in efficiency for lookups on zen.spamhaus.org; thanks to Henrik Krohns for that code, added to CREDITS

git-svn-id: e9fe9b84e32fc5e57b7d09c40cd78b14ea28ed71@646806 13f79535-47bb-0310-9956-ffa450edef68

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