When changing dungeon features with a wizard command use

dungeon_terrain_changed() so that events will be fired and the overmap will get updadated if things like portals or altars are overwritten.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@7582 c06c8d41-db1a-0410-9941-cceddc491573

Created by  zelgadis  on November 24, 2008
ETV7O3ZWPY5D4R2AOPI6IRAWUTZR55LNYBBSSXLIN6NLZSCCBQBQC
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