[PATCH v4 0/6]Finish converting git bisect to C part 4

These patches correspond to a fourth part of patch series of Outreachy project "Finish converting `git bisect` from shell to C" started by Pranit Bauva and Tanushree Tumane (https://public-inbox.org/git/pull.117.git.gitgitgadget@gmail.com) and continued by me.

This fourth part is formed by reimplementations of some `git bisect` subcommands, addition of tests and removal of some temporary subcommands.

These patch series emails were generated from: https://gitlab.com/mirucam/git/commits/git-bisect-work-part4-v4.1.

I would like to thank Junio Hamano, Andrzej Hunt and Christian Couder for reviewing this patch series.

General changes
---------------
* Rebase on master branch: 5d213e46bb (Git 2.33-rc2, 2021-08-11) 
to include latest updates in bisect-helper.c file.
* Add three tests requested by reviewers in v3 patch series in 
t6030-bisect-porcelain.sh file.

Specific changes ----------------

[5/6] bisect--helper: reimplement `bisect_run` shell function in C
* Content of the BISECT_RUN file is shown to the user.
* Use strvec_push() instead of xstrdup().
* Fix a bug on previous patch series regarding to 
BISECT_INTERNAL_SUCCESS_1ST_BAD_FOUND (-10) return code.

---

Miriam Rubio (3):
  t6030-bisect-porcelain: add tests to control bisect run exit cases
  t6030-bisect-porcelain: add test for bisect visualize
  bisect--helper: retire `--bisect-next-check` subcommand

Pranit Bauva (2):
  run-command: make `exists_in_PATH()` non-static
  bisect--helper: reimplement `bisect_visualize()`shell function in C

Tanushree Tumane (1):
  bisect--helper: reimplement `bisect_run` shell function in C

 builtin/bisect--helper.c    | 130 +++++++++++++++++++++++++++++++++---
 git-bisect.sh               |  87 +-----------------------
 run-command.c               |   2 +-
 run-command.h               |  12 ++++
 t/t6030-bisect-porcelain.sh |  21 ++++++
 5 files changed, 158 insertions(+), 94 deletions(-)