Bug 211004 Failed to remove temp db directory after running multiple reports
Description: I use Report Engine API to do runAndrender, run and dataextract tasks on multiple reports. Before the Platform started, I change the temp folder(System.setProperty( "java.io.tmpdir", TEMP_HOME )). Each task is closed after it finished and I shutdown the Platform after all the tasks finished. In log I found "Fail to remove one or more file in temp db directory,but it will be removed when the VM exits: D:\BIRT_NG\temp/BIRTSampleDB_1196129572031_10a6ae2". In temp folder the BIRTSampleDB_XXX is still here but not removed. I think it is the issue when remove the Temp sampleDB. Build number: 2.3.0.v20071127-0630
data/org.eclipse.birt.report.data.oda.jdbc/src/org/eclipse/birt/report/data/oda/jdbc/JDBCDriverManager.java
String actualPkg = actual.substring(0, actual.lastIndexOf('.') );
		String expectedPkg = expected.substring(0, expected.lastIndexOf('.') );
		return actualPkg.equals( expectedPkg );
	}
	
	/**
	 * Try to create a connection based on given connection properties.
	 * @param driverClassName
	 * @param connectionString
	 * @param userId
	 * @param password
	 * @throws SQLException
	 * @throws OdaException
	 */
	private void tryCreateConnection( String driverClassName,
			String connectionString, String userId, String password )
			throws SQLException, OdaException
	{
		Connection testConn = this.getConnection( driverClassName, 
				connectionString, userId, password, null );
		assert ( testConn != null );
        closeConnection( testConn );
	}
	
	/**