Patch for PKST timezone

Hi all,

Please accept attached patch for the following problem.

aftab(at)aftab-laptop:/opt/dev/pgsql/install/dbserver/bin$
aftab(at)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)

postgres=#
postgres=# CREATE TABLE test_table (c1 INT, c2 TIMESTAMP DEFAULT
timeofday()::TIMESTAMP);
CREATE TABLE
postgres=# INSERT INTO test_table VALUES (1);
ERROR: invalid input syntax for type timestamp: "Fri Apr 30 15:36:43.906075
2010 PKST"
postgres=#

And here is a little bit information about the system I am using.

aftab(at)aftab-laptop:/opt/dev/pgsql/install/dbserver/bin$ uname -a
Linux aftab-laptop 2.6.31-20-generic #58-Ubuntu SMP Fri Mar 12 05:23:09 UTC
2010 i686 GNU/Linux
aftab(at)aftab-laptop:/opt/dev/pgsql/install/dbserver/bin$
aftab(at)aftab-laptop:/opt/dev/pgsql/install/dbserver/bin$ ./pg_config
--version
PostgreSQL 9.0beta1
aftab(at)aftab-laptop:/opt/dev/pgsql/install/dbserver/bin$

Thanks,

--
Aftab Hussain,
EntepriseDB http://www.enterprisedb.com