Shaggy fur

Bears get extra-tough fur that helps take the edge off.  Should toughen
'em up a little and make the Threshold easier to get at.
Reenable warning for unable-to-finish-meal

Not sure why I'd have deleted that but I'm the most likely suspect.
This ought to fix it, in any event.
Tapeworm takedown

If you've EATHEALTH and the 3x hunger required to get it, you digest the
tapeworm for free.  Rivet, let me know if this is a problem and I'll
revert it.
Additional URSINE tweaks, mutation changes

I ended up having to pull the random-mutation from mutagen rolling a
post-Thresh, as it was seriously cramping URSINE.  Added fat-deposits
and made the claws part of the mutcat as well.  Net result, Bears get
better damage-soaking, marginal improvement to swim speed, and everyone
with body-size upgrades gets bonuses against poison.
Merge pull request #6898 from KA101/MoreBear

Mutation tweaking (mostly Ursine)