D451: revset: remove order information from tree

[quark (Jun Wu)]

quark added inline comments.

INLINE COMMENTS

> martinvonz wrote in test-revset.t:2893
> Does that mean you'll remove the other.sort() in fullreposet.__and__?

In another way. With the new code (`anyorder` gets aggressively used), `fullrepo & xs` would be optimized to `xs & fullrepo` and the latter does not have the sort.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D451

To: quark, #hg-reviewers
Cc: martinvonz, yuja, mercurial-devel