headers: added section # to RFC citation
karma: general improvements

skip earlytalker checks for positive senders

limit negative karma senders to 1 concurrent connection (hosts_allow)
  added karma::hook_pre_connection, to make hosts_allow change possible

added karma score to log entries
adjust_karma now increments properly
log/watch: raise default # of log lines to parse
logs: suppress perl errors in summary output
karma_tool: optimized for speedy IP search, IPv6

fixed one IPv6 issue
geoip: added too_far option
badrcptto: smite matches with -2 karma

useful for (reject=>naughty) + spam filter training
dnsbl: smite blacklisted IPs with -1 karma
dspam: be more conservative with karma awards

previous settings were reasonable for a well trained dspam. After starting with a fresh dspam, the settings were not optimal for the amount of naive that a default dspam is.
Merge branch 'master' of github.com:msimerson/qpsmtpd-dev