built-in-submodule & in-flight dependencies (was: What's cooking in git.git (Dec 2022, #07; Mon, 26))

> [...]
> [Cooking]
>
> * ab/no-more-git-global-super-prefix (2022-12-26) 9 commits
>  - read-tree: add "--super-prefix" option, eliminate global
>  - submodule--helper: convert "{update,clone}" to their own "--super-prefix"
>  - submodule--helper: convert "status" to its own "--super-prefix"
>  - submodule--helper: convert "sync" to its own "--super-prefix"
>  - submodule--helper: convert "foreach" to its own "--super-prefix"
>  - submodule--helper: don't use global --super-prefix in "absorbgitdirs"
>  - submodule.c & submodule--helper: pass along "super_prefix" param
>  - read-tree + fetch tests: test failing "--super-prefix" interaction
>  - submodule absorbgitdirs tests: add missing "Migrating git..." tests
>
>  Stop using "git --super-prefix" and narrow the scope of its use to
>  the submodule--helper.
>
>  Will merge to 'next'.
>  source: <cover-v5-0.9-00000000000-20221220T104519Z-avarab@gmail.com>
> [...]
> * ab/config-multi-and-nonbool (2022-11-27) 9 commits
>  - for-each-repo: with bad config, don't conflate <path> and <cmd>
>  - config API: add "string" version of *_value_multi(), fix segfaults
>  - config API users: test for *_get_value_multi() segfaults
>  - for-each-repo: error on bad --config
>  - config API: have *_multi() return an "int" and take a "dest"
>  - versioncmp.c: refactor config reading next commit
>  - config tests: add "NULL" tests for *_get_value_multi()
>  - config tests: cover blind spots in git_die_config() tests
>  - for-each-repo tests: test bad --config keys
>
>  Assorted config API updates.
>
>  Waiting for review.
>  source: <cover-v3-0.9-00000000000-20221125T093158Z-avarab@gmail.com>