Bug 165188 logging per report
Setting up a dedicated (birt) report server, which serves all our web apps, leads to a logging desaster. Birtegine logs all messages to one file. There's no info which rptdesign caused the logmessage or who (e.g. user) caused the logmessage. Retrieving who/which rpt caused some logmessage is not possible! There are two possible solutions: (a) prefixing each logmessage with a userdefineable message (task.setLogprefix("myprefix")) (b) set an outputstream for each task (task.setLoggingOutputStream(outputstream)) to split the huge logfile to many small pieces.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/ReportEngine.java
logger.log( Level.INFO,
						"Error occurs while initialze script scope", ex );
			}
			finally
			{
				Context.exit( );
			}
		}
	}
	/**
	 * get the root scope used by the engine
	 * 
	 * @return
	 */
	public Object getRootScope( )
	{
		return rootScope;
	}
	/**
	 * register the map entry into script object.
	 * 
	 * @param scope
	 *            script scope to be added.
	 * @param map
	 *            map
	 */
	private void registerBeans( ScriptableObject scope, Map map )
	{
		Iterator iter = map.entrySet( ).iterator( );
		while ( iter.hasNext( ) )