Merge branch 'jc/traverse-commit-list'

* jc/traverse-commit-list:
  revision.c: update show_object_with_name() without using malloc()
  revision.c: add show_object_with_name() helper function
  rev-list: fix finish_object() call

diff --cc revision.c
Simple merge

diff --cc revision.h
Simple merge

diff --cc upload-pack.c
Simple merge