Bugfixes and patches to JSW48

Attic	Attic.hex	Remove the faulty arrow in the Attic
GameExit	Exit.hex	Exit Jet Set Willy with SS-Space without clearing memory.
NoPass	NoPass.hex	Remove the password code, releasing memory.
Pause	Pause.hex	Interface 1 Pause bugfix.
RoomNumber	RoomNum.hex	Display room number.
Rooms	Rooms.hex	Allows 7-bit room numbers
Teleport	Teleport.hex	A different teleport system
Wall	WallL.hex	Allow Willy's head to move leftwards through walls
Wall	WallR.hex	Prevent Willy's head moving rightwards through walls
Willy	WillySP.hex	Allow room-specific Willy sprite
Blocks	Blocks.hex	Fix the block graphics bug.

---

Authored by J.G.Harston
Last update: 20-Feb-2017