linkrev: also adjust linkrev when bootstrapping 'follow' revset...
linkrev: also adjust linkrev when bootstrapping 'follow' revset
The follow revset (used by `hg log --follow`) now uses the new 'introrev'
method to bootstrap its traversal. This catches issues from linkrev-shadowing of
the changesets introducing the version of a file in source changeset.
A new test has been added to display pathological cases.
Another test is affected because it was meant to test this behavior but actually
failed to do so for half of the output. The output are now similar.