merge can take --signoff, but without pull passing --signoff down, it
is inconvenient to use; allow 'pull' to take the option and pass it
through.

The order of options in merge-options.txt is mostly alphabetical by
long option since 7c85d274 (Documentation/merge-options.txt: order
options in alphabetical groups, 2009-10-22).  The long-option bit
didn't make it into the commit message, but it's under the fold in
[1].  I've put --signoff between --log and --stat to preserve the
alphabetical order.

[1]: https://public-inbox.org/git/87iqe7zspn.fsf@jondo.cante.net/

Signed-off-by: W. Trevor King <wking@tremily.us>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

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

Bugfixes to an already graduated series.

* ls/filter-process-delayed:
  write_entry: untangle symlink and regular-file cases
  write_entry: avoid reading blobs in CE_RETRY case
  write_entry: fix leak when retrying delayed filter
  entry.c: check if file exists after checkout
  entry.c: update cache entry only for existing files

Code clean-up.

* ds/avoid-overflow-in-midpoint-computation:
  cleanup: fix possible overflow errors in binary search

Docfix.

* tb/complete-describe:
  completion: add --broken and --dirty to describe

Test tweak.

* sb/test-cmp-expect-actual:
  tests: fix diff order arguments in test_cmp

An ancient bug that made Git misbehave with creation/renaming of
refs has been fixed.

* jk/refs-df-conflict:
  refs_resolve_ref_unsafe: handle d/f conflicts for writes
  t3308: create a real ref directory/file conflict

* rs/rs-mailmap:
  .mailmap: normalize name for René Scharfe

Improve behaviour of "git fsck" upon finding a missing object.

* rs/fsck-null-return-from-lookup:
  fsck: handle NULL return of lookup_blob() and lookup_tree()

Leakfix and futureproofing.

* jk/sha1-loose-object-info-fix:
  sha1_loose_object_info: handle errors from unpack_sha1_rest