Updated crawl_manual.txt in expectation of the key changes (which will

come soon). Next to do: update help screens and tutorials and other files.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@3546 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dploog  on March 8, 2008
3PUH7BCEN6V6KDHCQQLXFTZZJXEF4OYLIQBIXHLWHDCTB57YKPBAC
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