Issue #14053: Fix "make patchcheck" to work with MQ.

Patch by Francisco Martín Brugué
diff --git a/Misc/NEWS b/Misc/NEWS
index 825c3a7..f0b0044 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -531,6 +531,9 @@
 Tools/Demos
 -----------
 
+- Issue #14053: patchcheck.py ("make patchcheck") now works with MQ patches.
+  Patch by Francisco Martín Brugué.
+
 - Issue #13930: 2to3 is now able to write its converted output files to another
   directory tree as well as copying unchanged files and altering the file
   suffix.  See its new -o, -W and --add-suffix options.  This makes it more