refactoring: new function split_rcpts() replaces two others split_rcpts() merges rcptlist_with_one_of_hostlist() and rcptlist_with_addr_is_local() into one with hardly adding complexity I'd actually say that the overall complexity decreased. Have a look at the comment for split_rcpts() in route.c

#undef DEF_MAIL_GROUP
#undef DEF_MAIL_USER

/* Define if you want to use lockfile library.  */
#undef USE_LIBLOCKFILE

#undef ENABLE_DEBUG

#undef ENABLE_RESOLVER

#undef ENABLE_AUTH

#undef USE_LIB_CRYPTO

#undef ENABLE_IDENT

#undef CONF_DIR

#undef DATA_DIR

#undef SBINDIR