Add diagnostic output IPSupport.printPlatformSupport(System.out) to tests in

java/net/httpclient:

java/net/httpclient/InvalidSubscriptionRequest.java
java/net/httpclient/StreamCloseTest.java
java/net/httpclient/ConcurrentResponses.java
java/net/httpclient/ManyRequestsLegacy.java
java/net/httpclient/ExpectContinueTest.java
java/net/httpclient/ProxySelectorTest.java
java/net/httpclient/EmptyAuthenticate.java
java/net/httpclient/ThrowingPushPromisesAsStringIO.java
java/net/httpclient/LargeResponseTest.java
java/net/httpclient/HttpClientClose.java
java/net/httpclient/AsyncShutdownNow.java
java/net/httpclient/HttpClientSendAsyncExceptionTest.java
java/net/httpclient/ShutdownNow.java
java/net/httpclient/FlowAdapterSubscriberTest.java
java/net/httpclient/ThrowingPushPromisesAsStringCustom.java
java/net/httpclient/DigestEchoClientSSL.java
java/net/httpclient/ContentLengthHeaderTest.java
java/net/httpclient/CookieHeaderTest.java
java/net/httpclient/BasicAuthTest.java
java/net/httpclient/HeadersTest2.java
java/net/httpclient/DigestEchoServer.java
java/net/httpclient/SplitResponseKeepAliveAsync.java
java/net/httpclient/HttpVersionsTest.java
java/net/httpclient/NoBodyPartOne.java
java/net/httpclient/AbstractNoBody.java
java/net/httpclient/SplitResponseSSLAsync.java
java/net/httpclient/SplitResponseSSL.java
java/net/httpclient/Response1xxTest.java
java/net/httpclient/ThrowingPublishersInRequest.java
java/net/httpclient/MultiAuthTest.java
java/net/httpclient/ThrowingSubscribersAsString.java
java/net/httpclient/OriginTest.java
java/net/httpclient/NonAsciiCharsInURI.java
java/net/httpclient/ConnectTimeoutWithProxySync.java
java/net/httpclient/BasicHTTP3Test.java
java/net/httpclient/BasicHTTP2Test.java
java/net/httpclient/CancelledPartialResponseTest.java
java/net/httpclient/LargeResponseContent.java
java/net/httpclient/SmokeTest.java
java/net/httpclient/ByteArrayPublishers.java
java/net/httpclient/ThrowingPublishersCustomBeforeCancel.java
java/net/httpclient/security/filePerms/SecurityBeforeFile.java
java/net/httpclient/security/filePerms/FileProcessorPermissionTest.java
java/net/httpclient/BufferingSubscriberErrorCompleteTest.java
java/net/httpclient/ALPNFailureTest.java
java/net/httpclient/HttpHeadersOf.java
java/net/httpclient/BasicRedirectTest.java
java/net/httpclient/ProxyTest.java
java/net/httpclient/MethodsTest.java
java/net/httpclient/ForbiddenHeadTest.java
java/net/httpclient/PlainProxyConnectionTest.java
java/net/httpclient/SmallTimeout.java
java/net/httpclient/HeadersLowerCaseTest.java
java/net/httpclient/MappingResponseSubscriber.java
java/net/httpclient/ImmutableSSLSessionTest.java
java/net/httpclient/ConnectTimeoutWithProxyAsync.java
java/net/httpclient/ThrowingPublishersSanity.java
java/net/httpclient/TestKitTest.java
java/net/httpclient/ShortResponseBodyGet.java
java/net/httpclient/ThrowingPushPromisesAsInputStreamIO.java
java/net/httpclient/ExpectContinue.java
java/net/httpclient/EchoHandler.java
java/net/httpclient/SplitResponseAsync.java
java/net/httpclient/Http1ChunkedTest.java
java/net/httpclient/RetryWithCookie.java
java/net/httpclient/TlsContextTest.java
java/net/httpclient/SubscriberAPIExceptions.java
java/net/httpclient/ThrowingPublishersInSubscribe.java
java/net/httpclient/ThrowingPushPromisesAsLinesIO.java
java/net/httpclient/CancelStreamedBodyTest.java
java/net/httpclient/BodySubscribersTest.java
java/net/httpclient/CancelRequestTest.java
java/net/httpclient/HttpClientBuilderTest.java
java/net/httpclient/ProxyServer.java
java/net/httpclient/ConnectTimeoutHandshakeAsync.java
java/net/httpclient/AbstractThrowingSubscribers.java
java/net/httpclient/ManyRequests2.java
java/net/httpclient/FilePublisherTest.java
java/net/httpclient/VersionTest.java
java/net/httpclient/SplitResponseKeepAlive.java
java/net/httpclient/ShortResponseBodyPost.java
java/net/httpclient/DebugLoggerTest.java
java/net/httpclient/HandshakeFailureTest.java
java/net/httpclient/HttpClientSNITest.java
java/net/httpclient/ZeroRedirects.java
java/net/httpclient/ALPNProxyFailureTest.java
java/net/httpclient/BufferSize1Test.java
java/net/httpclient/HttpInputStreamAvailableTest.java
java/net/httpclient/DependentActionsTest.java
java/net/httpclient/HttpInputStreamTest.java
java/net/httpclient/SSLExceptionTest.java
java/net/httpclient/SplitResponseSSLKeepAliveAsync.java
java/net/httpclient/RedirectTimeoutTest.java
java/net/httpclient/CancelledResponse.java
java/net/httpclient/AbstractConnectTimeoutHandshake.java
java/net/httpclient/AbstractThrowingPushPromises.java
java/net/httpclient/SpecialHeadersTest.java
java/net/httpclient/ReferenceTracker.java
java/net/httpclient/AltServiceUsageTest.java
java/net/httpclient/GZIPInputStreamTest.java
java/net/httpclient/HttpsTunnelTest.java
java/net/httpclient/UserAuthWithAuthenticator.java
java/net/httpclient/UnknownBodyLengthTest.java
java/net/httpclient/BodyProcessorInputStreamTest.java
java/net/httpclient/ShortResponseBodyPostWithRetry.java
java/net/httpclient/ThrowingSubscribersAsInputStream.java
java/net/httpclient/HttpResponseInputStreamInterruptTest.java
java/net/httpclient/AsFileDownloadTest.java
java/net/httpclient/ThrowingSubscribersAsLinesAsync.java
java/net/httpclient/Response204V2Test.java
java/net/httpclient/FlowAdaptersCompileOnly.java
java/net/httpclient/ThrowingSubscribersAsStringAsync.java
java/net/httpclient/AbstractThrowingPublishers.java
java/net/httpclient/ProxyAuthDisabledSchemes.java
java/net/httpclient/altsvc/AltServiceReasonableAssurance.java
java/net/httpclient/RedirectWithCookie.java
java/net/httpclient/ManyRequests.java
java/net/httpclient/ThrowingPushPromisesAsLinesCustom.java
java/net/httpclient/LineBodyHandlerTest.java
java/net/httpclient/HeadTest.java
java/net/httpclient/ThrowingPushPromisesSanity.java
java/net/httpclient/HttpResponseLimitingTest.java
java/net/httpclient/MessageHeadersTest.java
java/net/httpclient/ImmutableHeaders.java
java/net/httpclient/AbstractConnectTimeout.java
java/net/httpclient/FileChannelPublisherTest.java
java/net/httpclient/SendResponseHeadersTest.java
java/net/httpclient/InterruptedBlockingSend.java
java/net/httpclient/BufferSizePropertyClampTest.java
java/net/httpclient/RequestBuilderTest.java
java/net/httpclient/LineStreamsAndSurrogatesTest.java
java/net/httpclient/examples/JavadocExamples.java
java/net/httpclient/examples/WebSocketExample.java
java/net/httpclient/LineSubscribersAndSurrogatesTest.java
java/net/httpclient/HttpsTunnelAuthTest.java
java/net/httpclient/AggregateRequestBodyTest.java
java/net/httpclient/ShortRequestBody.java
java/net/httpclient/EncodedCharsInURI.java
java/net/httpclient/CustomResponseSubscriber.java
java/net/httpclient/HttpSlowServerTest.java
java/net/httpclient/RestrictedHeadersTest.java
java/net/httpclient/AuthFilterCacheTest.java
java/net/httpclient/InvalidSSLContextTest.java
java/net/httpclient/ISO_8859_1_Test.java
java/net/httpclient/HttpClientExceptionTest.java
java/net/httpclient/ShortResponseBody.java
java/net/httpclient/ThrowingPublishersCustomAfterCancel.java
java/net/httpclient/ThrowingPublishersInNextRequest.java
java/net/httpclient/HttpEchoHandler.java
java/net/httpclient/LineAdaptersCompileOnly.java
java/net/httpclient/ResponseBodyBeforeError.java
java/net/httpclient/HttpClientAuthRetryLimitTest.java
java/net/httpclient/HttpRedirectTest.java
java/net/httpclient/ResponsePublisher.java
java/net/httpclient/ThrowingPublishersIOAfterCancel.java
java/net/httpclient/DigestEchoClient.java
java/net/httpclient/HeadersTest.java
java/net/httpclient/DependentPromiseActionsTest.java
java/net/httpclient/HttpRequestNewBuilderTest.java
java/net/httpclient/TestKit.java
java/net/httpclient/BufferingSubscriberTest.java
java/net/httpclient/ConnectTimeoutHandshakeSync.java
java/net/httpclient/TimeoutBasic.java
java/net/httpclient/HttpClientShutdown.java
java/net/httpclient/ThrowingSubscribersAsInputStreamAsync.java
java/net/httpclient/ConnectTimeoutNoProxySync.java
java/net/httpclient/ExecutorShutdown.java
java/net/httpclient/MockServer.java
java/net/httpclient/AsyncExecutorShutdown.java
java/net/httpclient/ThrowingSubscribersAsLimitingAsync.java
java/net/httpclient/HttpResponseInputStreamTest.java
java/net/httpclient/HttpResponseConnectionLabelTest.java
java/net/httpclient/EscapedOctetsInURI.java
java/net/httpclient/CancelledResponse2.java
java/net/httpclient/ImmutableFlowItems.java
java/net/httpclient/RetryPost.java
java/net/httpclient/TimeoutOrdering.java
java/net/httpclient/ThrowingPushPromisesAsInputStreamCustom.java
java/net/httpclient/BufferingSubscriberCancelTest.java
java/net/httpclient/ThrowingSubscribersAsLines.java
java/net/httpclient/ConnectExceptionTest.java
java/net/httpclient/ThrowingSubscribersAsLimiting.java
java/net/httpclient/HttpRequestBuilderTest.java
java/net/httpclient/SplitResponseSSLKeepAlive.java
java/net/httpclient/MaxStreams.java
java/net/httpclient/ServerCloseTest.java
java/net/httpclient/InvalidInputStreamSubscriptionRequest.java
java/net/httpclient/NoBodyPartThree.java
java/net/httpclient/HeadersTest1.java
java/net/httpclient/HttpClientLocalAddrTest.java
java/net/httpclient/AuthSchemesTest.java
java/net/httpclient/NoBodyPartTwo.java
java/net/httpclient/ThrowingPublishersIOBeforeCancel.java
java/net/httpclient/ThrowingSubscribersSanity.java
java/net/httpclient/LightWeightHttpServer.java
java/net/httpclient/CustomRequestPublisher.java
java/net/httpclient/ProxyAuthDisabledSchemesSSL.java
java/net/httpclient/Response204.java
java/net/httpclient/SplitResponse.java
java/net/httpclient/FlowAdapterPublisherTest.java
java/net/httpclient/ssltest/TlsVersionTest.java
java/net/httpclient/ssltest/CertificateTest.java
java/net/httpclient/ssltest/Cert.java
java/net/httpclient/ssltest/Server.java
java/net/httpclient/StreamingBody.java
java/net/httpclient/UnauthorizedTest.java
java/net/httpclient/offline/DelegatingHttpClient.java
java/net/httpclient/offline/OfflineTesting.java
java/net/httpclient/offline/FixedHttpResponse.java
java/net/httpclient/offline/FixedResponseHttpClient.java
java/net/httpclient/UserCookieTest.java
java/net/httpclient/RequestBodyTest.java
java/net/httpclient/RedirectMethodChange.java
java/net/httpclient/ProxyAuthTest.java