Backport Fix for Issue #7776: Fix ``Host:'' header and reconnection when using http.client.HTTPConnection.set_tunnel().

Patch by Nikolaus Rath.
diff --git a/Misc/NEWS b/Misc/NEWS
index e028419..aac0204 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -49,6 +49,10 @@
 Library
 -------
 
+-  Issue #7776: Backport Fix ``Host:'' header and reconnection when using
+   http.client.HTTPConnection.set_tunnel() from Python 3.
+   Patch by Nikolaus Rath.
+
 - Issue #21306: Backport hmac.compare_digest from Python 3. This is part of PEP
   466.