Adjust dragon armour properties back towards 4.0 (they were using 4.1.2 props

due to an accidental import circa 0.1). I've left hides closer to the 4.1.2 AC.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@1689 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dshaligram  on June 29, 2007
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