From: Santiago Vila <sanvila@debian.org>
Subject: Do not regenerate version.txi just because Makefile was modified

--- a/Makefile
+++ b/Makefile
@@ -206,8 +206,8 @@
 
 ver = $(VERSION)
 version.txi:	Makefile
-	echo @set SLIBVERSION $(ver) > version.txi
-	echo @set SLIBDATE `date +"%B %Y"` >> version.txi
+	# echo @set SLIBVERSION $(ver) > version.txi
+	# echo @set SLIBDATE `date +"%B %Y"` >> version.txi
 
 scheme = scm