INT 2F - WinDOS v2.11 - GET SIMPLE TRUENAME                                     
	AX = AF16h
	DS:SI -> path to be canonicalized
	ES:DI -> buffer for canonicalized filename/pathname
Return: CF clear if successful
	    AX = 0000h
	CF set on error
	    AX = DOS error code (see #01680 at INT 21/AH=59h/BX=0000h)
Desc:	partially canonicalize a path, omitting SUBST, JOIN, ASSIGN, and
	  network redirections
SeeAlso: AX=AF00h"WinDOS",INT 21/AH=60h