INT 2F CU - Novell DOS 7+ FDOS EXTENSIONS - FIXUP CHECKSUMS / DIR UPDATE???     
	AX = 1008h
	BX = segment of directory buffer
	CX = cluster to fixup (0 = root)
	DI = directory entry index (truncated to cluster if subdirectory)
	BX:SI -> directory entry (single entry for hashing)
Return:	nothing
Notes:	This private function is called internally by the OS kernel to
	  ask the FDOS to fixup hashing/checksums.  By using the
	  INT 2F/AX=1001h FDOS hook, the call can be intercepted by external
	  system components such as the DELWATCH TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user.  The name comes from the name of the DOS function call used to remain in memory after termination..
	This function must under no circumstances be called by applications!
SeeAlso: INT 2F/AX=1001h,AX=1007h,AX=1009h,AX=10FEh