Fix 2011722: Reallow targetting beams such that you may be hit. (There's

a new prompt now, but don't prompt a second time if you already confirmed another one before.) Fix some issues when creating items in the Abyss during GDT_GAME_START. This may or may not have played a role in 2008976.

Lower spawning rate in the Abyss during GDT_GAME_START (10% spawning chance instead of guaranteed spawning per 5 turns).

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@6434 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on July 6, 2008
YMLVBQ6M27MECUVMU3BQP3WSGR7GW4XJMQIHLGHHWMVXHMMIXOYAC
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