Make dwarves' and orcs' +1 damage bonus for throwing racial gear

(introduced in trunk SVN revision 2444) actually apply, by adding the bonus to baseDam after assigning baseDam the base damage of the thrown item.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@2918 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on November 27, 2007
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