Fix a typo in package description
Put accidentally deleted LF in place
Merge pull request #408 from AlexYursha/patch-1

Fix a typo in package description
Rename method in MessageBrokerConfigurer
Polish spring-context

 - Cache interceptor internals now operate on collections of
   <? extends Cache> instead of <Cache>.
 - Deleted unused imports.
 - Deleted dead code.
 - Suppressed warnings for resource leaks related to not closing
   ApplicationContexts in tests.
 - Suppressed further non-issue warnings in tests.
Add default destination for @SendTo methods

Issue: SPR-11085
Enable/disable Cache-Control "must-revalidate" in ResourceHttpRequestHandler

Prior to this commit, the ResourceHttpRequestHandler would serve cacheable static resources
with a mandatory "must-revalidate" directive in the Cache-Control HTTP header.
This directive states that the client should always obey any freshness information
given.

This change allows to set the mustRevalidate property on a ResourceHandler basis for static
resources. Clients are then allowed to serve stale representations under special conditions,
i.e. this feature should avoid some GET requests/304 responses between clients and servers.

Issue: SPR-10464