INT 21 U - Named Pipes - LOCAL DosRawReadNmPipe                                 
	AX = 5F39h
	BX = handle
	CX = buffer length
	DS:DX -> buffer
Return: CF clear if successful
	    CX = bytes read
	CF set if error
	    AX = error code
Notes:	this function was introduced by LAN Manager but is also supported by
	  the Novell DOS Named Pipe Extender, Banyan VINES, OS/2 Virtual DOS
	  Machines, and others
	not documented in the LAN Manager Toolkit
SeeAlso: AX=5F35h,AX=5F3Ah,INT 2F/AX=1186h