Add a redo-always command: it adds an "always dirty" dependency to your target.

This is mostly useless except when combined with redo-stamp... I think.

t/clean.do

@@ -1,5 +1,5 @@
 redo example/clean curse/clean deps/clean "space dir/clean" stamp/clean
 rm -f c c.c c.c.c c.c.c.b c.c.c.b.b d mode1 makedir.log chdir1 deltest2 \
-	hello [by]ellow *.o *~ .*~ CC LD passfail silence silence.do \
-	touch1 touch1.do
+	hello [by]ellow *.o *~ .*~ *.log CC LD passfail silence silence.do \
+	touch1 touch1.do always1
 rm -rf makedir