Remove unused test class
Update CHANGES
[maven-release-plugin] prepare release 0.85
[maven-release-plugin] prepare for next development iteration
Add quiet method to Bootstrap to disable printing configuration properties
Jetty Client and Jetty 9
Remove Apache and Netty http clients
Run http client test suite over Jetty with SOCKS

Add TestingSocksProxy
Tighten type bounds for assertInstanceOf

This makes it possible to catch checks for completely unrelated types
at compile time. E.g.,

    assertInstanceOf("foo", Integer.class)

is a compile-time error.
Fix thread count for Jetty 9

Jetty 9 requires more threads than Jetty 8.
Collapse and deprecate AsyncHttpClient
Test dynamic BodyGenerator
Test JettyHttpClient.executeAsync()
Fix excessive log messages for HTTP tests
Configure Jetty to use java.util.Logging
Make http-client a test dependency for http-server
Update to airbase 16
Upgrade to airbase 17
Add back support for legacy http-client.threads config
Make field final

Thread-safety/visibility issue since the class can be called from arbitrary threads in Jetty.