ab/remove--super-prefix & ab/submodule-no-abspath (was: What's cooking in git.git (Dec 2022, #05; Wed, 14))

> * ab/remove--super-prefix (2022-11-21) 12 commits
>  . fetch: rename "--submodule-prefix" to "--super-prefix"
>  . 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
>  . Merge branch 'ab/submodule-no-abspath' into ab/remove--super-prefix
>  . submodule--helper absorbgitdirs: no abspaths in "Migrating git..."
>  . Merge branch 'ab/submodule-helper-prep-only' into ab/remove--super-prefix
>
>  Remove the top-level `--super-prefix` option.
>  Will discard.
>  cf. the thread leading to <xmqqmt86stm3.fsf@gitster.g>
>  source: <cover-v3-0.9-00000000000-20221119T122853Z-avarab@gmail.com>
>
>
> * ab/submodule-no-abspath (2022-11-23) 2 commits
>  . submodule absorbgitdirs: use relative <from> and <to> paths
>  . submodule--helper absorbgitdirs: no abspaths in "Migrating git..."
>
>  Remove an absolute path in the "Migrating git directory" message.
>
>  Revert out of 'next'.
>  cf. the thread leading to <xmqqmt86stm3.fsf@gitster.g>
>  source: <patch-1.1-34b54fdd9bb-20221109T020347Z-avarab@gmail.com>