* Reorganization of jetty-client classes.
* Moved oej.client.api to oej.client
* Moved oej.client.util to oej.client
* Moved implementation classes to oej.client.internal
* Moved transports to oej.client.transport
* Moved transport implementation classes to oej.client.transport.internal
* Moved TunnelRequest to oej.client.internal.
* Moved FastCGI transport classes to o.e.j.fcgi.transport
* Moved FastCGI transport implementation classes to o.e.j.fcgi.transport.internal
* Updated WebSocket core client to use only exported, non-internal, oej.client classes.
* Expanded oej.client.Destination APIs:
- added: getOrigin(), isSecure(), getProxy(), getConnectionPool(), getHttpClient(), send(..).
- removed: getScheme(), getHost(), getPort() because they don't uniquely identify a Destination anymore (Origin does)
* Moved destination sweeper functionality from HttpDestination to HttpClient.
HttpDestination does not implement close() anymore, now relies on LifeCycle.stop()
* Moved HttpReceiver.storeCookie() logic to HttpClient.putCookie() to avoid exposing CookieManager.
* Moved HttpClient.getAcceptEncodingField() to ContentDecoder.Factories
* Avoid public/protected Logger instances.
Signed-off-by: Simone Bordet <simone.bordet@gmail.com>