When extracting system extensions from typo3/cms and publishing
them to TER, replacements for these must be added to older
TYPO3 versions.

This is required so that TER extensions, that depend on these former
system extensions, can be required with composer along with an older
TYPO3 version.

Resolves: #81832
Releases: 8.7, 7.6
Change-Id: Ia7cab575a3b6e48e3cf15732d4fa93a72c784385
Reviewed-on: https://review.typo3.org/53434


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Helmut Hummel <typo3@helhum.io>
Tested-by: Helmut Hummel <typo3@helhum.io>