Allow classloader to be passed into EMS advanced properties

[genman]

Removes an unnecessary cast

Example:

ClassLoader ccl = Thread.currentThread().getContextClassLoader();
Properties p = new Properties();
p.put(JMXConnectorFactory.DEFAULT_CLASS_LOADER, ccl);

ConnectionSettings connectionSettings = new ConnectionSettings();
connectionSettings.setAdvancedProperties(p);
ConnectionFactory connectionFactory = new ConnectionFactory();
ConnectionProvider connectionProvider = connectionFactory.getConnectionProvider(connectionSettings);

[metlos]

How is this used?

[genman]

I used it to fix the classloader issue I saw with connecting to JBoss AS 7 JMX. But you figured out another way to do this...The change isn't really necessary but doesn't hurt either.

[genman]

Actually the change is redundant with Bug/1146167

[metlos]

Ok, so based on @genman 's comment, I think we can close this in favor of #5. Who has rights to do that @pilhuhn?

[genman]

I'll close it.