Change all copyright notices to refer to file COPYING
diff --git a/Makefile.in b/Makefile.in
index e4c4195..176d86f 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -83,8 +83,8 @@
 DIST_COMMON = $(srcdir)/aminclude.am $(srcdir)/Makefile.in \
 	$(srcdir)/Makefile.am $(top_srcdir)/configure \
 	$(am__configure_deps) $(srcdir)/config.h.in \
-	$(dist_noinst_SCRIPTS) depcomp ar-lib compile config.guess \
-	config.sub install-sh missing ltmain.sh
+	$(dist_noinst_SCRIPTS) depcomp COPYING ar-lib compile \
+	config.guess config.sub install-sh missing ltmain.sh
 bin_PROGRAMS = bin/test-encode-decode-interest$(EXEEXT)
 subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4