Merge branch 'jc/bottomless' into next

* jc/bottomless:
  rev-list --bisect: limit list before bisecting.
  Clean up trailing whitespace when pretty-printing commits
  "git cmd -h" for shell scripts.
  git-log <diff-options> <paths> documentation
  Retire git-log.sh (take #4)
  stripspace: incomplete line fix (take #2)