Added support for no_item_gen and generate_awake tags.

Note: no_item_gen/no_monster_gen produce very bad behaviour on full-screen maps. Don't use them there until this is fixed.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@1103 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dshaligram  on March 26, 2007
XY77S75KH5KV54MZVAPMUC64TVRE2QM2KVJAAGJGCIBGQEC5GUTQC
Change contents