TITANIC: Star Puzzle Different Keyboard functions

[dafioram]

Scummvm: 1.10.0git-4120-g720e146
Game: Titanic ver C.
OS: Win7-64

In the original game the keyboard keys function as follows:
TAB Toggles between the starmap and the photo of your home
Z Left (or use the mouse)
X Right (or use the mouse)
' Down (or use the mouse)
/ Up (or use the mouse)
; Forward (or use the mouse)
. Backward (or use the mouse)
SPACE Stop moving
L Lock a coordinate
D Unlock a coordinate

In scummvm all except "/" and ";" are the same.
In the original ";" goes forward fast. In ScummVM ";" goes backwords fast.
In scummvm "/" does nothing.

Moving the ship around and reorientating in space allows the locking on part of the puzzle to be solved easier.

[dafioram]

The first (easy) part of this task is to add the slash, "/", to look up and that has been done in PR978.

I didn't change the behavior for semicolon.