pgbouncer - pgbouncer: include userlist.txt in tgz

Log Message:
-----------
include userlist.txt in tgz

Modified Files:
--------------
pgbouncer:
Makefile (r1.24 -> r1.25)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/Makefile.diff?r1=1.24&r2=1.25)
NEWS (r1.30 -> r1.31)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/NEWS.diff?r1=1.30&r2=1.31)