* dbus/dbus-auth.c (handle_server_data_stupid_test_mech): Just get
credentials from our currently running process.
(get_word): Fix a buglet where we were copying the entire length
instead of relative to our position.
* dbus/dbus-hash.c (_dbus_hash_test): Don't try to allocate the
keys on the stack... it's 640k of data.
* dbus/dbus-sysdeps.c (_dbus_read_credentials_unix_socket): Always
read the credentials byte off the socket, even if we don't have
SO_PEERCRED.
(_dbus_poll): Implement poll() using select() for systems which
don't have it.
* glib/test-dbus-glib.c (main): Print out an error if no
parameters are given.
* test/data/auth/fallback.auth-script: Added. Tests that a client
can fallback to a secondary auth mechanism if the first fails.
