INT 21 U - DOS 3.1+ internal - COMMIT ALL FILES FOR SPECIFIED COMPUTER/PROCESS  
	AX = 5D01h
	DS:DX -> DOS parameter list (see #01686), only computer ID and
		  process ID fields used
Return: CF set on error
	    AX = error code (see #01680)
	CF clear if successful
Notes:	flushes buffers and updates directory entries for each file which has
	  been written to; if remote file, calls INT 2F/AX=1107h
	the computer ID and process ID are stored but ignored under DOS 3.3
	not supported by DR DOS 3.41 and 5.0; returns error code 01h.  Fully
	  supported by Novell DOS 7
SeeAlso: AH=0Dh,AH=68h,INT 2F/AX=1107h