INT 2F - Novell DOS 7+ FDOS EXTENSIONS - UPDATE FAT ENTRY / WRITE FAT???

	AX = 1007h
	BX = FAT entry to change
	DX = new value
Return:	nothing
Notes:	This private function is called internally by the OS kernel to
	  ask the FDOS to update the FAT.  By using the INT 2F/AX=1001h FDOS
	  hook, the call can be intercepted by external system components such
	  as the DELWATCH TSR.
	This function must under no circumstances be called by applications!
SeeAlso: INT 2F/AX=1001h,AX=1005h,AX=1006h,AX=1008h,AX=10FEh