Reverting change to enable crashes on OS X. Apparently it's 10.5 only. If only we had autoconfigure...

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@8716 c06c8d41-db1a-0410-9941-cceddc491573

Created by  ennewalker  on January 23, 2009
CAGWBGY4TFJNYAEH7VGZNCB3X2M3FZI3RF4JNLUVXSDV35ED47LAC
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