* python/python.c: Include "serial.h".

	* python/python.c: Include "serial.h".
	(gdbpy_event_fds): Change type to `struct serial *' a array from
	int array.
	(gdbpy_run_events): Change parameters.  Use serial_readchar in
	place of read.
	(gdbpy_post_event): Use serial_write in place of write.
	(gdbpy_initialize_events): Use serial_pipe instead of pipe, and
	serial_async in place of add_file_handler.