Upgraded HttpCore version to 4.3.3-SNAPSHOT

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HTTPASYNC-69: async request handler is closed by HttpAsyncRequestExecutor#closed if the underlying connection is found to be in an inconsistent state

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Define compiler properties locally so can potentially update to later version of project pom

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Standardise on Locale.ENGLISH for case-conversion (cannot use ROOT as the code targets 1.5+)

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HTTPCORE-376: AbstractNIOConnPool#requestCancelled() should not process pending requests wnen being shut down
Contributed by Dmitry Potapov <potapov.d at gmail.com>

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getBytes(Charset) requires Java 1.6+

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Use atromic reference for socket bound to the connection

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HTTPCORE-379: shut down non-blocking server side connection in case of an i/o or runtime error to avoid an infinite loop in the i/o reactor trying to flush buffered output
Contributed by Dmitry Potapov <potapov.d at gmail.com>

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpcore/branches/4.3.x@1590620 13f79535-47bb-0310-9956-ffa450edef68
Apply initial socket parameters prior to bind operation

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