[PATCH 0/5] Fix --recurse-submodules for submodule worktree changes

The fix is in the last patch, the first patches are just massaging the code
base to make the fix easy.

The second patch fixes a bug in the test, which was ineffective at testing.
The third patch shows the problem this series addresses,
the fourth patch is a little refactoring, which I want to keep separate
as I would expect it to be a performance regression[1].
The first patch is unrelated, but improves the readability of submodule test
cases, which we'd want to improve further.

Thanks,
Stefan

[1] The performance should improve once we don't use so many processes
    any more, but that repository series is stalled for now.

Stefan Beller (5):
  t/lib-submodule-update.sh: clarify test
  t/lib-submodule-update.sh: Fix test ignoring ignored files in
    submodules
  t/lib-submodule-update.sh: add new test for submodule internal change
  unpack-trees: Fix same() for submodules
  submodule: submodule_move_head omits old argument in forced case

 submodule.c               |  4 +++-
 t/lib-submodule-update.sh | 16 ++++++++++++++--
 unpack-trees.c            |  2 ++
 3 files changed, 19 insertions(+), 3 deletions(-)

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2.15.1.620.gb9897f4670-goog