Merge branch 'jk/no-more-pre-exec-callback' into pu

Will defer for 6 months until ancient "less" goes extinct.

# By Jeff King
* jk/no-more-pre-exec-callback:
  pager: drop "wait for output to run less" hack
Merge branch 'jc/split-blob' into pu

Not ready.

I finished the streaming checkout codepath, but as explained in
127b177 (bulk-checkin: support chunked-object encoding, 2011-11-30),
these are still early steps of a long and painful journey. At least
pack-objects and fsck need to learn the new encoding for the series
to be usable locally, and then index-pack/unpack-objects needs to
learn it to be used remotely.

Given that I heard a lot of noise that people want large files, and
that I was asked by somebody at GitTogether'11 privately for an
advice on how to pay developers (not me) to help adding necessary
support, I am somewhat dissapointed that the original patch series
that was sent almost two months ago still remains here without much
comments and updates from the developer community. I even made the
interface to the logic that decides where to split chunks easily
replaceable, and I deliberately made the logic in the original patch
extremely stupid to entice others, especially the "bup" fanboys, to
come up with a better logic, thinking that giving people an easy
target to shoot for, they may be encouraged to help out. The plan is
not working :-(.

* jc/split-blob:
  chunked-object: streaming checkout
  chunked-object: fallback checkout codepaths
  bulk-checkin: support chunked-object encoding
  bulk-checkin: allow the same data to be multiply hashed
  new representation types in the packstream
  packfile: use varint functions

Conflicts:
	builtin/pack-objects.c
	streaming.c
	t/t1050-large.sh
Merge branch 'jc/maint-push-refs-all' into pu

Allows pushing and fetching refs/stash.
There still seem to be other bugs hiding (e.g. try pushing twice).

Not ready.

* jc/maint-push-refs-all:
  get_fetch_map(): tighten checks on dest refs
  fetch/push: allow refs/*:refs/*
Merge branch 'lt/commit-tree-guess-utf-8' into pu

Teaches "git commit" and "git commit-tree" the "we are told to use
utf-8 in log message, but this does not look like utf-8---attempt to
pass it through convert-from-latin1-to-utf8 and see if it makes
sense" heuristics "git mailinfo" already uses.

A draft from Linus received privately without a log message.
Hopefully it will be rerolled.

# By Linus Torvalds
* lt/commit-tree-guess-utf-8:
  commit/commit-tree: correct latin1 to utf-8
Merge branch 'mh/maint-revisions-doc' into pu

The tip one will be rerolled.

# By Max Horn
* mh/maint-revisions-doc:
  Document rev^! and rev^@ as revision specifiers
  Make <refname> documentation more consistent.
Merge branch 'jl/submodule-rm' into pu

# By Jens Lehmann
* jl/submodule-rm:
  rm: remove submodules from the index and the .gitmodules file
  rm: don't fail when removing populated submodules
Merge branch 'ph/stash-rerere' into pu

Will be rerolled but is going in the right direction.

# By Phil Hord
* ph/stash-rerere:
  stash: invoke rerere in case of conflict
  test: git-stash conflict sets up rerere
Merge branch 'ar/clone-honor-umask-at-top' into pu

Will merge to 'next'.

# By Alex Riesen (1) and Junio C Hamano (1)
* ar/clone-honor-umask-at-top:
  rerere: make rr-cache fanout directory honor umask
  Restore umasks influence on the permissions of work tree created by clone
Merge branch 'tg/ce-namelen' into pu

Trivially correct clean-up and micro optimization.

# By Thomas Gummerer
* tg/ce-namelen:
  Replace strlen() with ce_namelen()
Merge branch 'cw/amend-commit-without-message' into pu

"commit --amend" used to refuse amending a commit with an empty log
message, with or without "--allow-empty-message".

Will merge to 'next'.

# By Chris Webb
* cw/amend-commit-without-message:
  Allow edit of empty message with commit --amend
Merge branch 'jc/maint-filter-branch-epoch-date' into pu

* jc/maint-filter-branch-epoch-date:
  filter-branch: do not forget the '@' prefix to force git-timestamp