RFR [9] 8153372: Remove sun.misc.ManagedLocalsThread from jdk.httpserver

[Chris Hegarty]

8056152 added a new constructor to java.lang.Thread to constructing Threads that
do not  inherit inheritable-thread-local initial values. Given there is now a supported
API for creating such threads, other areas of the JDK should be updated to use it.

This change updates the code in the jdk.httpserver to use the new Thread constructor.

diff --git a/src/jdk.httpserver/share/classes/module-info.java b/src/jdk.httpserver/share/classes/module-info.java
--- a/src/jdk.httpserver/share/classes/module-info.java
+++ b/src/jdk.httpserver/share/classes/module-info.java
@@ -25,8 +25,7 @@
 
 module jdk.httpserver {
     requires java.logging;
-    // 8153372
-    requires jdk.unsupported;
+
     exports com.sun.net.httpserver;
     exports com.sun.net.httpserver.spi;
     uses com.sun.net.httpserver.spi.HttpServerProvider;
diff --git a/src/jdk.httpserver/share/classes/sun/net/httpserver/ServerImpl.java b/src/jdk.httpserver/share/classes/sun/net/httpserver/ServerImpl.java
--- a/src/jdk.httpserver/share/classes/sun/net/httpserver/ServerImpl.java
+++ b/src/jdk.httpserver/share/classes/sun/net/httpserver/ServerImpl.java
@@ -36,7 +36,6 @@
 import com.sun.net.httpserver.*;
 import java.security.AccessController;
 import java.security.PrivilegedAction;
-import sun.misc.ManagedLocalsThread;
 import sun.net.httpserver.HttpConnection.State;
 
 /**
@@ -143,7 +142,7 @@
         if (executor == null) {
             executor = new DefaultExecutor();
         }
-        dispatcherThread = new ManagedLocalsThread(dispatcher);
+        dispatcherThread = new Thread(null, dispatcher, "HTTP-Dispatcher", 0, false);
         started = true;
         dispatcherThread.start();
     }

-Chris.