Add a comment about cvsu.

diff --git a/Makefile.maint b/Makefile.maint
index df3c2e7..0a1eeb1 100644 (file)
--- a/Makefile.maint
+++ b/Makefile.maint
@@ -28,6 +28,7 @@ GZIP_ENV = '--no-name --best --rsyncable'
 
 CVS = cvs
 
+# cvsu is part of the cvsutils package: http://www.red-bean.com/cvsutils/
 CVS_LIST = cvsu --find --types=AFGM
 
 ifeq ($(origin prev_version_file), undefined)