Patches generated by format-patch are meant to be exchanged as emails,
most of the time. And since it's generally agreed that text in mails
should be wrapped around 70 columns or so, make sure these diffstat
follow the convention (especially when used with --cover-letter since we
already defaults to wrapping 72 columns). The default can still be
overriden with command line options.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

We already wrap shortlog around 72 columns in cover letters. Do the same
for diffstat (also in cover letters).

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Signed-off-by: Junio C Hamano <gitster@pobox.com>

"git add -p" was taught to ignore local changes to submodules as
they do not interfere with the partial addition of regular changes
anyway.

* nd/add-i-ignore-submodules:
  add--interactive: ignore submodule changes except HEAD

Instead of maintaining home-grown email address parsing code, ship
a copy of reasonably recent Mail::Address to be used as a fallback
in 'git send-email' when the platform lacks it.

* mm/send-email-fallback-to-local-mail-address:
  send-email: add test for Linux's get_maintainer.pl
  perl/Git: remove now useless email-address parsing code
  send-email: add and use a local copy of Mail::Address

Doc update.

* ab/doc-cat-file-e-still-shows-errors:
  cat-file doc: document that -e will return some output

Doc update.

* as/read-tree-prefix-doc-fix:
  doc/read-tree: remove obsolete remark

Fix for a commented-out code to adjust it to a rather old API change.

* ys/bisect-object-id-missing-conversion-fix:
  bisect: debug: convert struct object to object_id

"git stash -- <pathspec>" incorrectly blew away untracked files in
the directory that matched the pathspec, which has been corrected.

* tg/stash-with-pathspec-fix:
  stash: don't delete untracked files that match pathspec

When resetting the working tree files recursively, the working tree
of submodules are now also reset to match.

* sb/submodule-update-reset-fix:
  submodule: submodule_move_head omits old argument in forced case
  unpack-trees: oneway_merge to update submodules
  t/lib-submodule-update.sh: fix test ignoring ignored files in submodules
  t/lib-submodule-update.sh: clarify test