Allow for ordering of mixed AspectJ before/after advices

Issue: SPR-9438
"depends-on" attribute on lang namespace element actually respected at runtime now

Issue: SPR-8625
Fixed documentation for "depends-on" attribute
Minor javadoc and source layout polishing
Allow for ordering of mixed AspectJ before/after advices

Issue: SPR-9438
Fix Assert.instanceOf exception message

Update the exception message used when Assert.instanceOf fails such
that it expects the provided message to end with '.'. This reverts
commit 5874383ef081bb52a872dd49d63e5b542fbf20ca which caused the
implementation to be at odds with the JavaDoc and the previous
release.

The updated code also has the benefit of protecting against a null
message.

Issue: SPR-10269
Folded a FactoryBean-specific check into predictBeanType now

This change means that we effectively revert SPR-8954's code change in favor of the isFactoryBean implementation simply relying on predictBeanType to sort it out, filtering a post-processed predictedType for FactoryBean applicability.

Issue: SPR-9177
Issue: SPR-9143
@Scheduled provides String variants of fixedDelay, fixedRate, initialDelay for placeholder support

Issue: SPR-8067
Further preparations for 3.2.2
@Scheduled provides String variants of fixedDelay, fixedRate, initialDelay for placeholder support

Issue: SPR-8067
Promote use of @PostConstruct and @PreDestroy

Update reference documentation to promote the use of the JSR-250
@PostConstruct and @PreDestroy annotations.

Issue: SPR-8493
Merge branch '3.2.x' into cleanup-3.2.x

* 3.2.x:
  Promote use of @PostConstruct and @PreDestroy
  @Scheduled provides String variants of fixedDelay, fixedRate, initialDelay for placeholder support
  Further preparations for 3.2.2
  @Scheduled provides String variants of fixedDelay, fixedRate, initialDelay for placeholder support
  Folded a FactoryBean-specific check into predictBeanType now
  Fix Assert.instanceOf exception message
  Allow for ordering of mixed AspectJ before/after advices
  Minor javadoc and source layout polishing
  Fixed documentation for "depends-on" attribute
  "depends-on" attribute on lang namespace element actually respected at runtime now
  Allow for ordering of mixed AspectJ before/after advices
Replace EasyMock with Mockito in spring-jms

Issue: SPR-10126