#13 Allies can spam bmap

[Markus Armbruster]

sharebmap writes country name (capitalized) to your
working bmap. Countries with funny names like ^^^ or
Xanadu can spam your bmap. Bad.

I believe the bmap should hold designation, ownership
and `minedness' separately. Suitable commands can
then present this information to the user.

Plain `bmap' could show the same confusing junk as now.

`bmap' with a new flag could show sector ownership.

`bmap' with a another new flag could show mines, but
not ownership.

`bmap' with yet another new flag could show
designations and nothing else.