[1728875] Fixed monsters not being drawn until one turn after being generated.

Added floor around columned hall.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@1517 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dshaligram  on June 3, 2007
Y3JUMLOAM4C4NFHTXM2I6ECUFNDCFJOTNOA2RDE7PZMFVVJYWHPQC
Change contents