[PATCH 00/12] Use ref transactions part 3

This is the third and final part of the original 48 patch series for basic transaction support.

It is used ontop of the previous two series :
* rs/ref-transaction-0 (2014-07-14) 19 commits
* rs/ref-transaction-1 (2014-07-16) 20 commits

This version implements some changes suggested by mhagger for the warn_if_removable changes. It also adds a new patch "fix handling of badly named refs" that repairs the handling of badly named refs.

Ronnie Sahlberg (12):
  wrapper.c: simplify warn_if_unremovable
  wrapper.c: add a new function unlink_or_msg
  refs.c: add an err argument to delete_ref_loose
  refs.c: pass the ref log message to _create/delete/update instead of
    _commit
  refs.c: pass NULL as *flags to read_ref_full
  refs.c: move the check for valid refname to lock_ref_sha1_basic
  refs.c: call lock_ref_sha1_basic directly from commit
  refs.c: pass a skip list to name_conflict_fn
  refs.c: propagate any errno==ENOTDIR from _commit back to the callers
  fetch.c: change s_update_ref to use a ref transaction
  refs.c: make write_ref_sha1 static
  refs.c: fix handling of badly named refs

 branch.c                |   4 +-
 builtin/blame.c         |   2 +-
 builtin/branch.c        |   6 +-
 builtin/clone.c         |   2 +-
 builtin/commit.c        |   4 +-
 builtin/fetch.c         |  36 ++++---
 builtin/fmt-merge-msg.c |   2 +-
 builtin/for-each-ref.c  |   6 +-
 builtin/log.c           |   3 +-
 builtin/receive-pack.c  |   5 +-
 builtin/remote.c        |   5 +-
 builtin/replace.c       |   4 +-
 builtin/show-branch.c   |   6 +-
 builtin/tag.c           |   4 +-
 builtin/update-ref.c    |  13 +--
 bundle.c                |   2 +-
 cache.h                 |  18 ++--
 fast-import.c           |   8 +-
 git-compat-util.h       |   6 ++
 http-backend.c          |   3 +-
 reflog-walk.c           |   3 +-
 refs.c                  | 247 +++++++++++++++++++++++++++++++-----------------
 refs.h                  |  17 ++--
 remote.c                |   6 +-
 sequencer.c             |   6 +-
 transport-helper.c      |   2 +-
 transport.c             |   5 +-
 walker.c                |   5 +-
 wrapper.c               |  30 ++++--
 29 files changed, 291 insertions(+), 169 deletions(-)