pgbouncer - pgbouncer: use unlikely() in debug macros

Log Message:
-----------
use unlikely() in debug macros

Modified Files:
--------------
pgbouncer/src:
system.h (r1.5 -> r1.6)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/system.h.diff?r1=1.5&r2=1.6)
util.h (r1.7 -> r1.8)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/util.h.diff?r1=1.7&r2=1.8)