[Bug-gnubg] extracting error rates from the relational database

[Christian Anthon]

Hi all,

I have made a small peace of code to generate a gtk-table of error and
luck rates for all players extracted from the new relational database.
I'm not fully satisfied with the appearance and I cannot decide on the
number of items to include, but if nobody protests I'll just submit
the code as it is.

Also it currently ignores the environments stuff, but that is kind of
on purpose as environments are only partially implemented and too much
bother to use anyway, IMHO.

There is one thing I cannot figure out though. Where and how is it
decided if a menu item should be active in general or only when a game
is in progress?

Christian.