[PATCH v2 0/3] add: remove Perl version of "git add -[pi]"

We've given the "git add -i" migration away from Perl to a built-in enough time to remove the old Perl code.

For v1, see: https://lore.kernel.org/git/cover-0.3-00000000000-20230203T125859Z-avarab@gmail.com/

Branch & CI for this at: https://github.com/avar/git/tree/avar/nuke-perl-add--interactive-2

The only change from v1 is to squash in a suggested change from Philippe Blain, thanks!

Ævar Arnfjörð Bjarmason (3):
  add: remove "add.interactive.useBuiltin" & Perl "git add--interactive"
  add API: remove run_add_interactive() wrapper function
  docs & comments: replace mentions of "git-add--interactive.perl"

 .gitignore                   |    1 -
 Documentation/config/add.txt |    7 +-
 Documentation/git-add.txt    |    6 +-
 INSTALL                      |    2 +-
 Makefile                     |    1 -
 builtin/add.c                |   61 +-
 builtin/checkout.c           |   12 +-
 builtin/clean.c              |    2 +-
 builtin/reset.c              |    4 +-
 builtin/stash.c              |    3 +-
 ci/run-build-and-tests.sh    |    1 -
 commit.h                     |    2 -
 git-add--interactive.perl    | 1920 ----------------------------------
 pathspec.c                   |    2 +-
 t/README                     |    4 -
 t/t2016-checkout-patch.sh    |    6 -
 t/t3701-add-interactive.sh   |   29 +-
 t/t6132-pathspec-exclude.sh  |    6 +-
 t/test-lib.sh                |    4 -
 19 files changed, 50 insertions(+), 2023 deletions(-)
 delete mode 100755 git-add--interactive.perl

Range-diff against v1:
1:  f39dde93011 ! 1:  71c7922b25f add: remove "add.interactive.useBuiltin" & Perl "git add--interactive"
    @@ Documentation/config/add.txt: add.ignore-errors (deprecated)::
     +	interactive mode, which then became the default in Git
     +	versions v2.37.0 to v2.39.0.
     
    + ## INSTALL ##
    +@@ INSTALL: Issues of note:
    + 	  for everyday use (e.g. "bisect", "request-pull").
    + 
    + 	- "Perl" version 5.8 or later is needed to use some of the
    +-	  features (e.g. preparing a partial commit using "git add -i/-p",
    ++	  features (e.g. sending patches using "git send-email",
    + 	  interacting with svn repositories with "git svn").  If you can
    + 	  live without these, use NO_PERL.  Note that recent releases of
    + 	  Redhat/Fedora are reported to ship Perl binary package with some
    +
      ## Makefile ##
     @@ Makefile: SCRIPT_LIB += git-mergetool--lib
      SCRIPT_LIB += git-sh-i18n
2:  fb0dafaf4a4 = 2:  9299f22cc2c add API: remove run_add_interactive() wrapper function
3:  6ee56de1371 = 3:  09bece75c22 docs & comments: replace mentions of "git-add--interactive.perl"