README about the files in this directory.

m4/README

@@ -0,0 +1,13 @@
+This directory contains m4 macro files for GNU Midnight Commander,
+Neither of those files is maintainted here.  Don't change those
+files unless:
+
+1) you are upgrading them from the latest version of the package where
+they are maintained
+
+OR
+
+2) it's a fix that is needed right now AND this fix has been submitted
+to the proper maintainer.
+
+Otherwise, your changes will be lost.