Adapt the existing WebArgumentResolver to the new HandlerMethodArgumentResolver interface from the MVC namespace [SPR-8234]

[spring-projects-issues]

Rossen Stoyanchev opened SPR-8234 and commented

1. MVC namespace to accept both existing and new interfaces wrapping existing interfaces with adapters
2. RequestMappingHandlerMethodAdapter and RequestMappingHandlerMethodExceptionResolver to accept custom resolvers and handlers in the new interfaces only - i.e. HandlerMethodArgumentResolvers and HandlerMethodReturnValueHandlers
3. A property to support custom ModelAndViewResolvers is still required since those can not be adapted and can only be invoked at the end (i.e. when no other HandlerMethodReturnValueHandlers supports the return value type) by the DefaultMethodReturnValueHandler.

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Affects: 3.1 M1

This issue is a sub-task of #12864

Referenced from: commits 23e37b6, 313546a