[Fix 1851878] Make options cls = random and race = random work in combination.

Also add the "Welcome, <name> the <species> <class>" to the selection screens for weapons and such. While this mostly is necessary if you've got cls and race both set to random, it is also useful for people like me who cannot remember what combination they've just chosen. :p

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@3557 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on March 9, 2008
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