Reintroduce chance of orc wizards and priests in orc bands, but slightly less likely than they were in 0.3.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@7202 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dshaligram  on October 9, 2008
W77GZLFCVLJUDSYK5UBWVSJPBCGITZJBHLWTHGE63GEW3RAQGDTAC
Change contents