Finally implemented by applying Paul Du Bois' latest patch. :)

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@3442 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on February 18, 2008
EMJSHEKS7UTRRLF7GW5WYVI7RAAUJJQX2D3PAIO7UZFGNREIZOAAC
Change contents