GHC no longer ever defines TABLES_NEXT_TO_CODE on its own
It should be entirely the responsibility of make/Hadrian to ensure that
everything that needs this flag gets it. GHC shouldn't be hardcoded to
assist with bootstrapping since it builds other things besides itself.
Subscribers: TerrorJack, rwbarton, carter
GHC Trac Issues: Trac #15548 -- progress towards but not fix
Differential Revision: https://phabricator.haskell.org/D5082 -- extract