pgbouncer - pgbouncer: compact md5 implementation

Log Message:
-----------
compact md5 implementation

Modified Files:
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pgbouncer/include:
md5.h (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/include/md5.h.diff?r1=1.2&r2=1.3)
pgbouncer/src:
md5.c (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/md5.c.diff?r1=1.3&r2=1.4)