- there are various bits of code to manage ref/unref of data slots, that should
be merged into a generic facility
+
+ - add _dbus_return_if_fail, _dbus_return_val_if_fail() and use on public entry
+ points in place of _dbus_assert(). Add --disable-checks to control whether these
+ do anything.
+
+ - assorted _-prefixed symbols in libdbus aren't actually used by
+ libdbus, only by the message bus. These bloat up the library
+ size. Not sure how to fix, really.
+
+ - dbus_error_has_name(), dbus_message_name_is()