revsetbenchmark: add `::tip and draft()` to the canonical list
The want to test element on different side of the iterators.
--- a/contrib/revsetbenchmarks.txt Mon Apr 28 15:14:11 2014 -0700
+++ b/contrib/revsetbenchmarks.txt Tue Apr 29 19:15:36 2014 -0700
@@ -2,6 +2,7 @@
draft()
::tip
draft() and ::tip
+::tip and draft()
0::tip
roots(0::tip)
author(lmoscovicz)