fifo_pop

	value.g.v = fifo_pop(fifo.gp.r)

	This routine will pop a value off of the top of a FIFO.

	fifo		FIFO to pop

	This function requires the following include files:

	cbslib_h

	Related functions:

	fifo_init, fifo_push, fifo_peek, fifo_delete, fifo_free,
	fifo_is_empty

	C/C++ usage:

	void	*fifo;
	void	*value;

	value = fifo_pop(&fifo);