cmu_disconnect

	status.i4.v = cmu_disconnect(mailbox_name.i1a.r)

	This routine disconnects a communication path previously established
	with a call to cmu_connect.

	mailbox_name	mailbox name (CMU_NAMLEN characters)

	This function returns ACNET status values as follows:

	OK			success
	CMU_NOMB		not connected to this mailbox

	This function requires the following include files:

	clib_h, acnet_errors_h

	Related functions:

	cmu_connect, cmu_receive, cmu_send, cmu_empty_box

	C/C++ usage:

	static const char	mailbox_name[CMU_NAMLEN+1] = "mailbox_name";
	int	status;

	status = cmu_disconnect(mailbox_name);