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
refreshURLs();
			}
		}
		
		/**
		 * Refresh the URL list of DriverClassLoader
		 * @return if the refreshURL is different than the former one then return true otherwise
		 * 			return false
		 * @throws OdaException 
		 */
		public boolean refreshURLs() throws OdaException
		{
			if ( bundle == null )
				return false;			
			
			
			boolean foundNew = false;
			
			if( driverClassPath != null )
			{
				try
				{
					File driverClassFile = new File( driverClassPath );
					if ( driverClassFile.exists( ) )
					{
						this.addURL( driverClassFile.toURI().toURL( ) );
						
						if ( driverClassFile.isDirectory( ) )
						{
							File[] driverFiles = driverClassFile.listFiles( new FileFilter(){