fp_parse_line():

fp_parse_line():
* More slapd.conf-keywords with passwords to log as "<keyword> ***":
  "syncrepl" (in slapd), "acl-bind", "acl-method", "idassert-bind"
  (in back-ldap), "acl-passwd" (in back-<ldap/meta>).
* When no tokens, i = -1 initialization caused out-of-bounds access.
* Handle initial argc == argv_size (e.g. 0).