Declared JDK 6 update 18 as minimum requirement
Mentioned "-parameters" compiler flag in javadoc
Fixed accidental use of JDK 1.7+ Integer/Long.compare methods

Issue: SPR-11319
Polishing
Introduced customizeConnection callbacks for URLConnection used by exists() / contentLength() / lastModified()

Issue: SPR-11320
Polishing
Write prelude on successive SockJS streaming requests

sockjs-client expects a prelude to be written on every request with
streaming transports. The protocol tests don't make this clear and
don't expose this issue.

The test case for SPR-11183 (writing 20K messages in succession) did
expose the issue and this commit addresses it.

Issue: SPR-11183
Make RequestMappingHandlerMapping xml config easier

Prior to this commit, it was necessary to override
the HandlerMapping definition to change properties
like useSuffixPatternMatch, useSuffixPatternMatch...

This commits adds new attributes on the
mvc:annotation-driven XML tag that allows to configure
such flags:
* use-suffix-pattern-match
* use-trailing-slash-match
* use-registered-suffix-pattern-match

Issue: SPR-10163
Improve logging in TransactionalTEL

This commit makes the logging in TransactionalTestExecutionListener
consistent for both starting and ending transactions. Specifically,
the current TestContext is now included in the informational log
statement when starting a new transaction.

Issue: SPR-11323