[PATCH v5 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-v5.

I would like to thank Johannes Schindelin, Bagas Sanjaya and Christian Couder for reviewing this patch series.

Specific changes
----------------
[1/6] t6030-bisect-porcelain: add tests to control bisect run exit cases
* Add evaluation of error code 255 in test 'bisect run fails with exit 
code equals or greater than 128'.
* Remove test with error code smaller than 0.
---

[4/6] bisect--helper: reimplement `bisect_visualize()`shell function in C
* Use strvec_push() instead of strvec_pushl().
---

[5/6] bisect--helper: reimplement `bisect_run` shell function in C
* Add error message.
* Remove exit variable.
* Write contents of bisect_state() in BISECT_RUN file and show to user.
---

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    | 157 ++++++++++++++++++++++++++++++++++--
 git-bisect.sh               |  87 +-------------------
 run-command.c               |   2 +-
 run-command.h               |  12 +++
 t/t6030-bisect-porcelain.sh |  18 +++++
 5 files changed, 182 insertions(+), 94 deletions(-)