Fix data errors revelead by checkitems, checkpowers, and checkeffects


git-svn-id: svn://svn.code.sf.net/p/kolmafia/code@14981 b29ace70-8910-0410-8dcc-aa2fc6433167
Update mallprices.txt


git-svn-id: svn://svn.code.sf.net/p/kolmafia/code@14982 b29ace70-8910-0410-8dcc-aa2fc6433167
Bump version to 16.6


git-svn-id: svn://svn.code.sf.net/p/kolmafia/code@14983 b29ace70-8910-0410-8dcc-aa2fc6433167
Allow Zombie Masters to eat a steel lasagna, not a steel margarita

git-svn-id: svn://svn.code.sf.net/p/kolmafia/code@14984 b29ace70-8910-0410-8dcc-aa2fc6433167