- Added separate exceptions for reading and writing HttpMessages

Fix SPEL tests when using maven.  With the maven test runner expression.spel.SetValueTests is run before expression.spel.EvaluationTests. The order is reversed in eclipse/spring-build.  Static variables are modifed in SetValueTests that cause EvaluationTests to fail if it is run first.  Make a simple fix so SetValueTests uses a local evaluation context variable instead of a static variable.

DispatcherServlet.processHandlerException checks whether the ModelAndView is empty before rendering it.

IN PROGRESS - issue SPR-5599: Hook @Configuration class processing into <context:component-scan/> and <context:annotation-config/> through AnnotationConfigUtils#registerAnnotationConfigProcessors 

FreeMarkerView and ResourceBundle/XmlViewResolver can be initialized with ServletContext only (e.g. for testing)

Made WebApplicationContextUtils:registerWebApplicationScopes public. Changed core's org.springframework.asm OSGi import to proper version numbers