Instead of using a hand-managed argument array, use argv-array API
to manage dynamically formulated command line.

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

This script was added in 36e5e70 (Start deprecating "git-command" in
favor of "git command", 2007-06-30) with the intent of aiding the
transition away from dashed forms.

It has already been used to help the transision and served its
purpose, and is no longer very useful for follow-up work, because
the majority of remaining matches it finds are false positives.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

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

* rr/diffcore-pickaxe-doc:
  diffcore-pickaxe doc: document -S and -G properly
  diffcore-pickaxe: make error messages more consistent

* cr/git-work-tree-sans-git-dir:
  git.txt: remove stale comment regarding GIT_WORK_TREE

* fc/do-not-use-the-index-in-add-to-index:
  read-cache: trivial style cleanups
  read-cache: fix wrong 'the_index' usage

* dm/unbash-subtree:
  contrib/git-subtree: Use /bin/sh interpreter instead of /bin/bash

* jc/core-checkstat:
  deprecate core.statinfo at Git 2.0 boundary

* jc/t5551-posix-sed-bre:
  t5551: do not use unportable sed '\+'

* vv/help-unknown-ref:
  merge: use help_unknown_ref()
  help: add help_unknown_ref()