log2sql: added UPDATE support to exec_query
Q:Plugin.pm: abstracted out store_deferred_reject
moved triplicated init_resolver into Plugin.pm
dspam/spamassassin: adjust karma awards

dspam: be more conservative when learning from karma
sa: added an SA autolearn bonus
random_error: fixed typo, added std pragmas
resolvable_fromhost: documented reject naughty
spf: add comment re: Authentication-Results header