#14 PostgreSQLDatabasePolicy timestampFunction() fix

[Joel Schneider]

Fix for problem: PostgreSQLDatabasePolicy causes
DomainTEST failure in JRF 2.0 beta 4.

This patch makes a single line modification to
PostgreSQLDatabasePolicy.java, changing
"timestamp(timestamp 'now')" to "now()".

My environment: Linux (Debian 3.0), Sun J2SE SDK
1.4.1_02, PostgreSQL 7.2.1, "pg73jdbc3.jar" binary JDBC
driver downloaded from http://jdbc.postgresql.org/
(this driver apparently required for correct operation
under Java 1.4).

[Joel Schneider]

2.0 beta 4 - PostgreSQLDatabasePolicy fix