A little more project-file cleanup; link against readline for Lua's benefit.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@1311 c06c8d41-db1a-0410-9941-cceddc491573

Created by  nlanza  on April 14, 2007
GOGYRB76LK2UFYSF36HZWHHGPVIAKRFDZAXLXEJYF72LNIHFCYJQC
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