README and copyright notice suggested by Karl Berry.

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+This directory contains metainformation about the gnulib modules, one file
+per module. These files are used by gnulib-tool.
+
+All the files in this directory are distributed under the following copyright:
+
+  Copyright (C) 2002-2004 Free Software Foundation, Inc.
+  Copying and distribution of this file, with or without modification,
+  are permitted in any medium without royalty provided the copyright
+  notice and this notice are preserved.