run-tests: stop automatically adding a (glob) for bundle backup lines
This is the first step to dropping the existing globs for '\' matches, now that
it is handled automatically. Instead of just dropping it, this pattern is now
used to convert to '/' paths, to reduce the amount of manual cleanup required
when creating tests on Windows.
histedit: preserve active branch while histediting
The branch information was properly preserved in the changeset, but the
"active" branch of the working copy could be lost (the branch of the base
being used).
Histedit used to behave properly in this regard but the case was not tested
and regressed 4 years ago in
ab2362e1672e.