[PATCH 4 of 4 clfilter] clfilter: remove use of xrange in revset

[Dave S]

Pierre-Yves David wrote:

[see http://selenic.com/pipermail/mercurial-devel/2012-October/045347.html]

> For changelog level filtering to take effect it need to be used for any
> iteration. Some remaining use of `xrange` in revset code is replace by proper
> use of `changelog.revs` or direct iteration over changelog.

I think it should be "for all iterations", and in the next sentence
"uses" and "is replaced".

(These aren't wrong spellings, they are wrong words (as in "not what a
native speaker would use"... which describes most of my French)

/dps

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