Merge branch 'bc/fetch-thin-less-aggressive-in-normal-repository'

Merge branch 'bc/fetch-thin-less-aggressive-in-normal-repository'

Earlier we made "rev-list --object-edge" more aggressively list the
objects at the edge commits, in order to reduce number of objects
fetched into a shallow repository, but the change affected cases
other than "fetching into a shallow repository" and made it
unusably slow (e.g. fetching into a normal repository should not
have to suffer the overhead from extra processing).  Limit it to a
more specific case by introducing --objects-edge-aggressive, a new
option to rev-list.

* bc/fetch-thin-less-aggressive-in-normal-repository:
  pack-objects: use --objects-edge-aggressive for shallow repos
  rev-list: add an option to mark fewer edges as uninteresting
  Documentation: add missing article in rev-list-options.txt