[Updated PATCH 0/2] Improve remote helpers exec error reporting

This reroll fixes the following from previous round:
- Split loop-trying-to-close to its own inline function.
- Don't rely on pipe(2) preserving fd array in case of failure.
- Don't try to use partially received error codes.
- Don't send error about partial write as it would go to who knows where.
- Add a testcase (ENOENT is detected correctly).

Ilari Liusvaara (2):
  Report exec errors from run-command
  Improve transport helper exec failure reporting

 Makefile               |    1 +
 run-command.c          |   79 ++++++++++++++++++++++++++++++++++++++++++++++--
 t/t0061-run-command.sh |   13 ++++++++
 test-run-command.c     |   35 +++++++++++++++++++++
 transport-helper.c     |   14 ++++++--
 5 files changed, 135 insertions(+), 7 deletions(-)
 create mode 100755 t/t0061-run-command.sh
 create mode 100644 test-run-command.c