When doing an Abyss area shift try to preserve Sanctuary, unless the

center of Sanctuary is outside of the area being preserved during the shift, in which case get rid of it.

When doing an Abyss teleport into a totally new Abyss area remove sanctuary so the player can lay down a new on immediately, since the old one will be completely gone.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@6316 c06c8d41-db1a-0410-9941-cceddc491573

Created by  zelgadis  on July 1, 2008
23KINGGZGEVCKOXZQAKJHHCEF7XOJCAJTQT7VEDSS55YMYQM3Z4AC
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