[MonoDevelop] Two shortcut key bugs in Mono.TextEditor

[Mike Krüger]

Hi

> keyBindings.Add (GetKeyCode (Gdk.Key.z, Gdk.ModifierType.ControlMask |
> Gdk.ModifierType.ShiftMask), MiscActions.Redo);
> ->
> keyBindings.Add (GetKeyCode (Gdk.Key.Z, Gdk.ModifierType.ControlMask |
> Gdk.ModifierType.ShiftMask), MiscActions.Redo);
> 
> i.e. make the "z" uppercase.
> 

I fixed it (I wasn't able to reproduce it, but I believe that this may
happen).

In monodevelop our input mechanism is a bit more complex therefore bugs
on that level may not be recognized :/.

Regards
Mike