* dbus/dbus-connection.c: disable verbose lock spew
* tools/dbus-send.c: add --print-reply command line option
* tools/dbus-print-message.h (print_message): new util function
shared by dbus-send and dbus-monitor
* tools/dbus-monitor.c (handler_func): exit on disconnect
* dbus/dbus-transport-unix.c (do_reading): if the transport is
disconnected, don't try to use the read_watch
* dbus/dbus-watch.c (dbus_watch_get_enabled): assert watch != NULL
so we can find this bug more easily
