httprepo: suppress the `real URL is...' message in safe, common cases.
When the actual and requested URL only differ by trailing slashes,
there is no need to warn. As an example, this easily happens when
accessing repositories on Bitbucket over HTTP(S).
As far as I could tell, there were no existing tests for this
behaviour.
changeset: 0:4cbec7e6f8c4
tag: tip
user: Testing
date: Thu Jan 01 00:00:00 1970 +0000
summary: test
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repo/
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