+FS::cust_pkg _require_'s FS::$svc, but this won't work with %FS::UID::callback
+loading of configuration. (pry need same idea, but will run immediately if
+context allows). Looks like error is masked by 'use FS::cust_svc' which in
+turn 'use's FS::{svc_acct, svc_acct_sm, svc_domain}' which is now explicit
+w/comments in source
+
+Allow a cancelled/suspended/active status from packages to bubble up to
+the customer lists. Put active, then suspended, then cancelled accounts.
+Similar ordering on the package listing inside a single customer.
+