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.sampledb/src/org/eclipse/birt/report/data/oda/sampledb/SampleDBJDBCConnectionFactory.java
else
			{
				
				return super.loadClass( name, resolve);
			}
		}
		
		/**
		 * @see java.lang.ClassLoader#getResource(java.lang.String)
		 */
		public URL getResource(String name)
		{
			if ( DerbyClassLoader.isDerbyResource(name) )
			{
				
				return derbyLoader.getResource(name);
			}			
			else
			{
				
				return super.getResource( name);
			}
		}
	}
	
	/**
	 * Handles loading of Derby classes and resources to ensure that the right version of Derby
	 * library is used. Works around DERBY-1228 (http://issues.apache.org/jira/browse/DERBY-1228)
	 */
	private static class DerbyClassLoader extends URLClassLoader