pgbouncer - pgbouncer: proper usage of flexible array

Log Message:
-----------
proper usage of flexible array

Modified Files:
--------------
    pgbouncer/include:
        bouncer.h (r1.6 -> r1.7)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/include/bouncer.h.diff?r1=1.6&r2=1.7)
        sbuf.h (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/include/sbuf.h.diff?r1=1.5&r2=1.6)
        system.h (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/include/system.h.diff?r1=1.5&r2=1.6)
    pgbouncer/src:
        main.c (r1.25 -> r1.26)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/main.c.diff?r1=1.25&r2=1.26)
        sbuf.c (r1.21 -> r1.22)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/sbuf.c.diff?r1=1.21&r2=1.22)