Update the NetHack patch.

This new patch properly records 'unique' and 'not generated anywhere' flags on
monsters (that is, G_NOGEN and G_UNIQ). We can use these to fix bogus
generation information in the following commit(s).
Fix incorrect generation information reported by the bot.

For example, Asmodeus was listed as being able to generate in gehennom and the
main dungeon. However, Asmodeus is a unique so that is incorrect. This commit
shows 'nowhere' for monsters that don't generate anywhere (like woodchucks) and
'unique' for unique mosnters.