[#14037] Allow fusion for zip7 and related
Reviewers: bgamari, simonpj, hvr
Reviewed By: simonpj
Subscribers: AndreasK, simonpj, osa1, dfeuer, rwbarton, carter
GHC Trac Issues: #14037 (closed)
Differential Revision: https://phabricator.haskell.org/D5249