pgbouncer - pgbouncer: Magic number and error message cleanup.

Log Message:
-----------
Magic number and error message cleanup.

Thanks to David Fetter

Modified Files:
--------------
    pgbouncer/src:
        admin.c (r1.14 -> r1.15)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/admin.c.diff?r1=1.14&r2=1.15)
        bouncer.h (r1.10 -> r1.11)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/bouncer.h.diff?r1=1.10&r2=1.11)
        client.c (r1.12 -> r1.13)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/client.c.diff?r1=1.12&r2=1.13)
        janitor.c (r1.14 -> r1.15)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/janitor.c.diff?r1=1.14&r2=1.15)
        loader.c (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/loader.c.diff?r1=1.4&r2=1.5)
        objects.c (r1.19 -> r1.20)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/objects.c.diff?r1=1.19&r2=1.20)
        pooler.c (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/pooler.c.diff?r1=1.4&r2=1.5)
        util.c (r1.11 -> r1.12)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/util.c.diff?r1=1.11&r2=1.12)