Bug #1379994: Fix *unicode_escape codecs to encode r'\' as r'\\'
just like string codecs.
diff --git a/Misc/NEWS b/Misc/NEWS
index 1b6ef04..4581e14 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,9 @@
 Core and builtins
 -----------------
 
+- Bug #1379994: Builtin unicode_escape and raw_unicode_escape codec
+  now encodes backslash correctly.
+
 - Patch #1350409: Work around signal handling bug in Visual Studio 2005.
 
 - Bug #1281408: Py_BuildValue now works correct even with unsigned longs