Fix more threading API related bugs: Thread.get_name() --> Thread.name.

Seen when setting RPCHandler.debugging=True
diff --git a/Misc/NEWS b/Misc/NEWS
index 8c80bc2..7a833a3 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -24,6 +24,9 @@
 Library
 -------
 
+- IDLE would print a "Unhandled server exception!" message when internal
+  debugging is enabled.
+
 - Issue #4455: IDLE failed to display the windows list when two windows have
   the same title.