Merge branch 'kh/format-patch-range-diff-notes' into jch

"git format-patch --range-diff=... --notes=..." did not drive the
underlying range-diff with correct --notes parameter, ending up
comparing with different set of notes from its main patch output
you would get from "git format-patch --notes=..." for a singleton
patch.

* kh/format-patch-range-diff-notes:
  format-patch: handle range-diff on notes correctly for single patches
  revision: add rdiff_log_arg to rev_info
  range-diff: rename other_arg to log_arg

diff --cc builtin/log.c
Simple merge

diff --cc builtin/range-diff.c
Simple merge

diff --cc log-tree.c
Simple merge

diff --cc revision.h
Simple merge