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
}
		
		/**
		 * @see java.lang.ClassLoader#loadClass(java.lang.String, boolean)
		 */
		protected synchronized Class loadClass(String name, boolean resolve) throws ClassNotFoundException
		{
			if ( isGood && isDerbyClass(name) )
			{
				
				 
				
				Class c = findLoadedClass(name);
				if (c == null) 
				{
					if ( logger.isLoggable( Level.FINER ))
						logger.finer("Load derby class: " + name );
			        c = findClass(name);
				}
				if (resolve) {
				    resolveClass(c);
				}
				return c;
			}
			else
			{
				return super.loadClass(name, resolve);
			}
		}