INT 7F - Alloy MW386 - RESTRICT DIRECTORY TO GROUP                              
	AH = F0h
	AL = group number
	DS:DX -> ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. directory name
Return: CF clear if successful
	    AX = status
		0002h directory not found
		0003h directory not found
		0005h directory in use, cannot be restricted
		02xxh restricted to group xxh
	CF set on error
Note:	the restriction on the directory may be removed by calling this
	  function with group 0, then using AH=F1h to assign the directory to
	  group 0
SeeAlso: AH=F1h,AH=F2h,AH=F3h