pgbouncer - pgbouncer: new drop_on_error param

Log Message:
-----------
new drop_on_error param

Modified Files:
--------------
    pgbouncer/doc:
        config.txt (r1.10 -> r1.11)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/doc/config.txt.diff?r1=1.10&r2=1.11)
        todo.txt (r1.28 -> r1.29)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/doc/todo.txt.diff?r1=1.28&r2=1.29)
    pgbouncer/include:
        bouncer.h (r1.17 -> r1.18)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/include/bouncer.h.diff?r1=1.17&r2=1.18)
    pgbouncer/src:
        main.c (r1.43 -> r1.44)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/main.c.diff?r1=1.43&r2=1.44)
        objects.c (r1.47 -> r1.48)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/objects.c.diff?r1=1.47&r2=1.48)
        server.c (r1.28 -> r1.29)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/server.c.diff?r1=1.28&r2=1.29)