Bug 1983398: turns out the royal jelly wasn't regenerating by eating

mechanical trap items, but rather because update_level() wasn't respecting the M_NO_REGEN flag when healing monsters upon returning to a level, so the royal jelly was healing on Slime:6 while I was resting on Slime:5.

Also, add a debug diagnostic message for which monster is eating which item.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@5794 c06c8d41-db1a-0410-9941-cceddc491573

Created by  zelgadis  on June 13, 2008
BQXHIR3D7LBBMUMNNZC76YZS2BDD673KRRRLPXTNXUDMHTQK2RTQC
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