docbot - docbot: Nickname in use handling.

Log Message:
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Nickname in use handling. Started some code for recognizing who is on channels which will be used later for answer redirection.

Modified Files:
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docbot:
docbot.pl (r1.16 -> r1.17)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/docbot/docbot/docbot.pl.diff?r1=1.16&r2=1.17)