Simplify Java Configuration RequestMatcher Usage

[rwinch]

By default, we should reject using the built in RequestMatcher implementations other than MvcRequestMatcher in a MvcRequestMatcher application.

Alternatively we can deprecate/remove antMatcher, regexMatchers, and mvcMatchers from the DSL and have a requestMatcher that is automatic based on the classpath. Users that want to opt out of this would need to use requestMatchers(new RegExRequestMatcher(...)). This makes it much more difficult to get the wrong configuration.

[evgeniycheban]

I can take this.

[rwinch]

@evgeniycheban Thank you for the volunteering. This is going to be a pretty tricky issue with quite a bit of design necessary. For that reason, I'm not sure if it is an ideal for contribution issue.