Applied patch from Aaron Mulder (ammulder@alumni.princeton.edu) that fixes

jdbc datasource support for jdk1.4/jdbc3

 Modified Files:
 	jdbc/build.xml jdbc/org/postgresql/Driver.java.in
 	jdbc/org/postgresql/jdbc2/optional/BaseDataSource.java
 	jdbc/org/postgresql/jdbc2/optional/PGObjectFactory.java
 	jdbc/org/postgresql/jdbc2/optional/PooledConnectionImpl.java
 	jdbc/org/postgresql/jdbc2/optional/PoolingDataSource.java
 	jdbc/org/postgresql/test/jdbc2/optional/BaseDataSourceTest.java
 	jdbc/org/postgresql/test/jdbc2/optional/OptionalTestSuite.java
 	jdbc/org/postgresql/test/jdbc3/Jdbc3TestSuite.java
 Added Files:
 	jdbc/org/postgresql/jdbc3/Jdbc3ConnectionPool.java
 	jdbc/org/postgresql/jdbc3/Jdbc3ObjectFactory.java
 	jdbc/org/postgresql/jdbc3/Jdbc3PooledConnection.java
 	jdbc/org/postgresql/jdbc3/Jdbc3PoolingDataSource.java
 	jdbc/org/postgresql/jdbc3/Jdbc3SimpleDataSource.java
 	jdbc/org/postgresql/test/jdbc2/optional/PoolingDataSourceTest.java
 	jdbc/org/postgresql/test/jdbc3/Jdbc3ConnectionPoolTest.java
 	jdbc/org/postgresql/test/jdbc3/Jdbc3PoolingDataSourceTest.java
 	jdbc/org/postgresql/test/jdbc3/Jdbc3SimpleDataSourceTest.java
 	jdbc/org/postgresql/test/util/MiniJndiContext.java
 	jdbc/org/postgresql/test/util/MiniJndiContextFactory.java