Reapply "Separate unstable download information to a separate file, make"

This reverts commit bd9178cd9df82b7c0ff6f06b79ddb13aa7578362.

git-svn-id: svn+ssh://svn.gnucash.org/repo/htdocs/branches/beta@22693 57a11ea4-9604-0410-9ed3-97b8803252fd