[PATCH 0/2] tree-walk improvements

The first patch is a re-roll of Peff's patch from 2014 -- here's the archive message:

http://git.661346.n2.nabble.com/PATCH-tree-walk-be-more-specific-about-corrupt-tree-errors-td7603558.html

Not sure why this wasn't applied then, but I thought it looked pretty good, so I added a few tests.

Hopefully the encoding works correctly on these patches. If not, you can fetch from https://github.com/novalis/git/ on branch dturner/bad-trees

Email address note 1: my employer wants me to use my company address, but not my company computer, for patches I write on work time. This means that I'm going to continue corresponding from novalis@novalis.org, but will send patches with the @twosigma.com address in the author line.

Email address note 2: I'm not subscribed to the mailing list these days, so please CC me (at novalis@novalis.org) on replies.

David Turner (1):
  fsck: handle bad trees like other errors

Jeff King (1):
  tree-walk: be more specific about corrupt tree errors

 fsck.c                                             |  18 +++--
 t/t1007-hash-object.sh                             |  15 +++-
 t/t1007/tree-with-empty-filename                   | Bin 0 -> 28 bytes
 t/t1007/tree-with-malformed-mode                   | Bin 0 -> 39 bytes
 t/t1450-fsck.sh                                    |  17 ++++-
 .../307e300745b82417cc1a903f875c7d22e45ef907       |   4 +
 .../f506a346749bb96f52d8605ffba9fb93d46b5ffd       | Bin 0 -> 45 bytes
 tree-walk.c                                        |  83 ++++++++++++++++++---
 tree-walk.h                                        |   8 ++
 9 files changed, 125 insertions(+), 20 deletions(-)
 create mode 100644 t/t1007/tree-with-empty-filename
 create mode 100644 t/t1007/tree-with-malformed-mode
 create mode 100644 t/t1450/bad-objects/307e300745b82417cc1a903f875c7d22e45ef907
 create mode 100644 t/t1450/bad-objects/f506a346749bb96f52d8605ffba9fb93d46b5ffd