Made sure that when compiling with JDK 9 we actually use a JDK 8 runtime.
Updated the Maven Compiler Plugin to latest version, with support for
JDK 9 --release command line.
Removed unnecessary Maven Compiler Plugin declarations in POMs.
Idle timeout have a special meaning in that they become a no-operation
if the application is dispatched but idle (neither reading nor writing).
HttpChannelOverHTTP2 now forwards the idle timeout to HttpInput, which
will only change its state if it is interested in reading.
HttpInput.consumeAll() has been modified to consume all input even if
it's already failed.
Failures caused by the other peer (e.g. I/O failures or stream resets)
are now retained and will eagerly consumed any queued data to free up
the flow control windows.
+ Fixing HashLoginService to track its Config via File reference only
(dropping support for URL reference)
+ Adding new `this.web-inf.path` property that jetty-web.xml can use
Fixed by calling tryFillInterested() rather than fillInterested() to
cope with the race between reads scheduling read interest and
setWriteListener() that also executes code in
HttpChannelState.unhandle() that wants to schedule read interest.
+ Upgrading to jetty-test-helper 4.0
+ Removing use of org.eclipse.jetty.toolchain.test.SimpleRequest
+ Removing use of org.eclipse.jetty.toolchain.test.http.SimpleHttpParser
+ Removing use of org.eclipse.jetty.toolchain.test.http.SimpleHttpResponse
+ Updating long since deprecated (and now removed) known quirky methods
in jetty-test-helper and the test classes.
* Updated Maven plugins to versions that support JDK 9.
* Added jdk9 profiles to the build files.
* Introduced modules jetty-alpn-java-client and jetty-alpn-java-server
containing a pure JDK 9 implementation of ALPN.
* Wired ALPN connection factories (client and server) to use the proper
ALPN implementation based on the JDK platform version (8 or 9).
