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
}
		}
		
		return factory;
	}
	
	private void loadDriverExtensions()
	{
		if ( driverExtensions != null )
			
			return;
		
		
		driverExtensions = new HashMap();
		IExtensionRegistry extReg = Platform.getExtensionRegistry();
		/* 
		 * getConfigurationElementsFor is not working for server Platform. 
		 * I have to work around this by walking the extension list
		IConfigurationElement[] configElems = 
			extReg.getConfigurationElementsFor( OdaJdbcDriver.Constants.DRIVER_INFO_EXTENSION );
		*/
		IExtensionPoint extPoint = 
			extReg.getExtensionPoint( OdaJdbcDriver.Constants.DRIVER_INFO_EXTENSION );
		
		if ( extPoint == null )
			return;
		
		IExtension[] exts = extPoint.getExtensions();
		if ( exts == null )
			return;