Tile changes. *waves to Enne*

Fix assertion error when unwielding items.

FR 1838216: Make R-click on map really show grid information. FR 1838219: Add more diverse action verbs for items in inventory ("eat", "unwield" etc. rather than plain "use") and allow memorizing by L-clicking on books. Bug 1858432: Show 0 charge icon for empty but unID'd wands.

Also: Don't regard enslavement on friendlies as attack attempt.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@3264 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on January 12, 2008
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