This directory has all versions of BusyBox back to the start of Erik Andersen's
maintainership.

The versions in the downloads directory are the ones we're still likely to
put some effort into supporting if you ask questions about them on the
mailing list; I.E. They're old, but not obsolete.  If it's in the legacy
directory but not in the downloads directory, the project's maintainer
has effectively declared that version obsolete, and you should probably
think about upgrading.