Move fall-back version string to Makefile

Makefile

@@ -20,7 +20,7 @@ GITDESC	= $(subst tig-,,$(shell git describe))
 WTDIRTY	= $(if $(shell git diff-index HEAD 2>/dev/null),-dirty)
 VERSION	= $(GITDESC)$(WTDIRTY)
 else
-VERSION	= $(shell test -f VERSION && cat VERSION || echo "unknown-version")
+VERSION	= 0.18
 endif
 ifdef DIST_VERSION
 VERSION = $(DIST_VERSION)

contrib/release.sh

@@ -3,7 +3,7 @@
 # Script for preparing a release or updating the release branch.
 # Usage: $0 version
 #
-# Copyright (c) 2009-2010 Jonas Fonseca <fonseca@diku.dk>
+# Copyright (c) 2009-2012 Jonas Fonseca <fonseca@diku.dk>
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License as
@@ -34,6 +34,7 @@ if test -n "$VERSION"; then
 
 	# Update files which should reference the version.
 	echo "$VERSION" > VERSION
+	sed -i "s/VERSION\s=\s[0-9]\+[.][0-9]\+/VERSION	= $VERSION/" Makefile	
 	perl -pi -e 's/^tig master.*/@@TITLE@@/ms' NEWS
 	perl -pi -e "s/^@@TITLE@@.*/$TITLE/" NEWS