Update games/mangband to latest upstream release

Unmark BROKEN, generate patches for the bits (duplicate symbols) that
broke the build, (these have been submitted upstream), massage messages
and such. Changing version DOES mean that you can't connect to
older servers, so include UPDATING to try to avoid people losing
games (killed by pkg upgrade is so much more disheartening than
killed by a Greater basilisk).

Reported by: linimon