Same as raw1394_new_handle, but also binds the handle to the
specified 1394 port. Equivalent to raw1394_new_handle followed by
raw1394_get_port_info and raw1394_set_port. Useful for
command-line programs that already know what port they want. If
raw1394_set_port returns ESTALE, retries automatically.
The default device node is /dev/raw1394, but one can override the default by setting environment variable RAW1394DEV. However, if RAW1394DEV points to a non-existant or invalid device node, then it also attempts to open the default device node.