[Bug-gnubg] Tutor mode

[Ian Shaw]

Windows build 020804

Hint window appears at top left corner of screen and has no title bar. This
means I can't move it, and it is obscuring my board.

When I pick a move from the hint window, it goes through the Considering....
process again. This should not be necessary.

Clicking on the board to roll the dice generates a dice roll per click
(almost) while Tutor is considering your cube action..

How about doing some pre-processing on the hint while waiting for the user
to make a play? This would speed things up a bit.

How about an option to let you get on with playing while GnuBg analyses your
moves - like the old auto-analyse mode but running as a background task.
This would allow you to keep playing and review the moves after the game?
Many moves are very obvious and it is tedious while GnuBg does a 2-ply eval
on them. (I know, I know!  I should just get a faster PC or use lower
settings).

Regards
Ian Shaw