Are any of these relevant for syncing 3.4 with trunk, or are only the files in trunk used for rule updates? These are the files in the rules directory that have differences between trunk and the 3.4 branch:
20_dnsbl_tests.cf 20_drugs.cf 20_freemail.cf 20_freemail_domains.cf 20_imageinfo.cf 20_ratware.cf 25_uribl.cf 50_scores.cf