correct TCL should be used before starting entity PMs

In EjbModule before starting persistence managers for entity beans, correct thread class loader should be set. Like so
protected void startService() throws Exception
{
// before EntityContainer returns from the startService, its PM should be usable
ListIterator iter = containerOrdering.listIterator();
while( iter.hasNext() )
{
Container con = (Container) iter.next();
if(con.getBeanMetaData().isEntity())
{
ClassLoader oldCl = SecurityActions.getContextClassLoader();
SecurityActions.setContextClassLoader(con.getClassLoader());

try

{ ((EntityContainer)con).getPersistenceManager().start(); }

finally

{ // Reset classloader SecurityActions.setContextClassLoader(oldCl); }

}
}
...