Please accept attached patch for the following problem.
aftab@aftab-laptop:/opt/dev/pgsql/install/dbserver/bin$ aftab@aftab-laptop:/opt/dev/pgsql/install/dbserver/bin$ ./psql postgres psql (9.0beta1) Type "help" for help.
postgres=# SHOW timezone; TimeZone -------------- Asia/Karachi (1 row)