reintroduced createBinder template method in Servlet/Portlet AnnotationMethodHandlerAdapter (SPR-6534)

HttpMessageConverter.write() now allows for a specific content type.

all @SessionAttributes get exposed to the model before handler method execution; MultipartRequest is available as a mixin interface on (Native)WebRequest as well

@RequestParam and co support placeholders and expressions in their defaultValue attributes (SPR-5922); @Value expressions supported as MVC handler method arguments as well (against request scope)

support for default "conversionService" bean in an ApplicationContext; revised formatting package, now integrated with DataBinder and AnnotationMethodHandlerAdapter; revised AccessControlContext access from BeanFactory

moved multipart and bind to web project since independent of servlet and required by new native web request parameter map

EL container integration; support for contextual objects; removal of deprecated Spring 2.0 functionality; Java 5 code style