[PATCH v3 00/13] fix mergetool+rerere+subdir regression

If rerere is enabled, no pathnames are given, and mergetool is run
from a subdirectory, mergetool always prints "No files need merging".
Fix the bug.

This regression was introduced in
57937f70a09c12ef484c290865dac4066d207c9c (v2.11.0).

Changes since v2:
  * Added entries to .mailmap.
  * Patch 2/4 was split into multiple separate commits.
  * Moved '-O' out of $orderfile.
  * $orderfile is now adjusted after running cd_to_toplevel.
  * Added lots of comments.
  * Other minor tweaks to address review feedback.

Richard Hansen (13):
  .mailmap: Use my personal email address as my canonical
  t7610: update branch names to match test number
  t7610: Move setup code to the 'setup' test case.
  t7610: use test_when_finished for cleanup tasks
  t7610: don't rely on state from previous test
  t7610: run 'git reset --hard' after each test to clean up
  t7610: delete some now-unnecessary 'git reset --hard' lines
  t7610: always work on a test-specific branch
  t7610: don't assume the checked-out commit
  t7610: spell 'git reset --hard' consistently
  t7610: add test case for rerere+mergetool+subdir bug
  mergetool: take the "-O" out of $orderfile
  mergetool: fix running in subdir when rerere enabled

 .mailmap             |   2 +
 git-mergetool.sh     |  36 ++++++-
 t/t7610-mergetool.sh | 276 ++++++++++++++++++++++++++++++---------------------
 3 files changed, 197 insertions(+), 117 deletions(-)

-- 
2.11.0.390.gc69c2f50cf-goog