pgbouncer - pgbouncer: add faq, some cleanups

Log Message:
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add faq, some cleanups

Modified Files:
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    pgbouncer/doc:
        Makefile (r1.7 -> r1.8)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/doc/Makefile.diff?r1=1.7&r2=1.8)
        config.txt (r1.3 -> r1.4)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/doc/config.txt.diff?r1=1.3&r2=1.4)
        overview.txt (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/doc/overview.txt.diff?r1=1.5&r2=1.6)
        pgbouncer.1 (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/doc/pgbouncer.1.diff?r1=1.4&r2=1.5)
        pgbouncer.5 (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/doc/pgbouncer.5.diff?r1=1.4&r2=1.5)
        todo.txt (r1.19 -> r1.20)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/doc/todo.txt.diff?r1=1.19&r2=1.20)

Added Files:
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    pgbouncer/doc:
        faq.txt (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/doc/faq.txt?rev=1.1&content-type=text/x-cvsweb-markup)