Windows: Use the "big" PE object format on amd64

Authored by bgamari on Dec 6 2018, 2:28 PM.

Description

Windows: Use the "big" PE object format on amd64

Test Plan: Do full build on Windows.

Reviewers: AndreasK, Phyx

Reviewed By: AndreasK

Subscribers: rwbarton, erikd, carter

GHC Trac Issues: Trac #15934

Differential Revision: https://phabricator.haskell.org/D5383

(cherry picked from commit 1ef90f990da90036d481c830d8832e21b8f1571b)