pgbouncer - pgbouncer: docs: mention console behavious when

Log Message:
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docs: mention console behavious when auth_mode=any

Modified Files:
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pgbouncer/doc:
config.txt (r1.19 -> r1.20)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/doc/config.txt?r1=1.19&r2=1.20)
usage.txt (r1.8 -> r1.9)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/doc/usage.txt?r1=1.8&r2=1.9)