Fixed some randart auto-inscription bugs.

For jewellery randarts, the properties of the randart's basetype are included in the auto-inscription.

Auto-inscribe unidentified randarts if the the player has learned some of its properties via equiping it.

If an unidentified randart is autoinscribed, is subsequently identified, and the identification reveals more of its properties, then remove the old atuo-inscription string before adding the new one.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@3000 c06c8d41-db1a-0410-9941-cceddc491573

Created by  zelgadis  on December 5, 2007
KPU2SA6G7UECM5N6PNXOT5CCQAYFBN47K5JYBQMFBD25HL2A5GIAC
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