Separated "hg push -u" into "hg pull" and "hg update", because they

bert-github · bert-github · commit e05b93ea65f6 · 2012-12-07T13:27:57.000+01:00
aren't the same.
diff --git a/css3-layout/Makefile b/css3-layout/Makefile
@@ -53,7 +53,8 @@ commit: update all
 	hg push
 
 update:
-	hg pull -u
+	hg pull
+	hg update
 
 clean:
 	rm -f Overview.html Overview.err
