[PATCH 00/20] nd/diff-parseopt part 3

The next part of nd/diff-parseopt to continue converting more diff options to parseopt. Based on nd/diff-parseopt-2.

Part 4 will hopefully finish the diff.c part and we'll move on to 4-5 more parts on revision.c.

Nguyễn Thái Ngọc Duy (20):
  diff-parseopt: convert --[no-]indent-heuristic
  diff-parseopt: convert --patience
  diff-parseopt: convert --histogram
  diff-parseopt: convert --diff-algorithm
  diff-parseopt: convert --anchored
  diff-parseopt: convert --binary
  diff-parseopt: convert --full-index
  diff-parseopt: convert -a|--text
  diff-parseopt: convert -R
  diff-parseopt: convert --[no-]follow
  diff-parseopt: convert --[no-]color
  diff-parseopt: convert --word-diff
  diff-parseopt: convert --word-diff-regex
  diff-parseopt: convert --color-words
  diff-parseopt: convert --exit-code
  diff-parseopt: convert --quiet
  diff-parseopt: convert --ext-diff
  diff-parseopt: convert --textconv
  diff-parseopt: convert --ignore-submodules
  diff-parseopt: convert --submodule

 Documentation/diff-options.txt |   2 +-
 diff.c                         | 342 ++++++++++++++++++++++-----------
 2 files changed, 229 insertions(+), 115 deletions(-)