revlog.ancestors: add support for including revs
This is in preparation for an upcoming refactoring. This also fixes a bug in
incancestors, where if an element of revs was an ancestor of another it would
be generated twice.
perf: add command to test performance of membership in ancestor set
The new command, perfancestorset, takes an argument denoting which revset to
test the membership of.
Currently this runs through all the ancestors and converts them into a set.
The primary purpose of having this is to compare this approach, currently used
in several places, against the upcoming lazy approach.
ancestor: move missingancestors doctest out into a separate file
This is in preparation for upcoming patches which will reuse the same graph
for tests.
dirstate: remove obsolete comment from setbranch
This comment should have been removed in
b74361cf7c0a, when the call
to scmutil.checknewlabel was removed.