Merge branch 'aa/add-p-no-auto-advance'

"git add -p" learned a new mode that allows the user to revisit a
file that was already dealt with.

* aa/add-p-no-auto-advance:
  add-patch: allow interfile navigation when selecting hunks
  add-patch: allow all-or-none application of patches
  add-patch: modify patch_update_file() signature
  interactive -p: add new `--auto-advance` flag

diff --cc add-interactive.c
Simple merge

diff --cc add-patch.c
Simple merge

diff --cc builtin/checkout.c
Simple merge

diff --cc builtin/reset.c
Simple merge

diff --cc builtin/stash.c
Simple merge

diff --cc t/t3701-add-interactive.sh
Simple merge

diff --cc t/t9902-completion.sh
Simple merge