Updating references to @resource usage

[SPR-8549] ContextCache is now keyed by MergedContextConfiguration instead of String; MergedContextConfiguration now implements custom hashCode() and equals() methods and no longer generates a context cache key.

revised Servlet 3.0 based StandardServletMultipartResolver for correct param/file distinction; added multipart content type and headers access to MultipartRequest (dropping the previous header access solution on MultipartFile); MultipartFilter uses a Servlet 3.0 based StandardServletMultipartResolver by default

A <scheduled:task> element declared within a
<beans default-lazy-init="true"> element represents a contradiction in
terms: such a task will never be executed.

For this reason, we now override any inherited lazy-init settings
when parsing <scheduled:task> elements, forcing lazy-init to false
for the underlying ScheduledTaskRegistrar bean.

Thanks to Mike Youngstrom for contributing an initial patch.

Issue: SPR-8498

SPR-8532 Exclude Tiles transitive deps on 'com.springsource.javax.servlet' from 'com.springsource.org.apache.tiles.jsp' and 'com.springsource.org.apache.tiles.servlet' only.

+ add LTW support for JBoss 7
(renamed existing classes to MC (JBoss 5&6) and introduced Modules (JBoss 7))

This change returns the invocation order of
ConfigurationClassPostProcessor#enhanceConfigurationClasses to its
pre-3.1 M2 state. An earlier (and now unnecessary) refactoring in
service of @Feature method processing caused the change that this now
reverts.

SPR-8001 Recognize case when MultipartRequest is null and argument is of type MultipartFile and raise helpful exception.

SPR-8532 Upgrade org.springframework.web.servlet to Servlet 3.0 (as provided dependency) and add support for javax.servlet.Part parameter