Tamar Christina authored Nov 29, 2016 and Ben Gamari committed Nov 29, 2016

Following D2684 these two tests need to be updated:

 * T7037: timeout.exe now waits until all processes are finished.
          this makes T7037 reliable. So enabled.

 * T876: Unknown reason, allocations are much lower than before.

Test Plan: ./validate

Reviewers: austin, simonmar, bgamari

Reviewed By: bgamari

Subscribers: thomie, #ghc_windows_task_force

Differential Revision: https://phabricator.haskell.org/D2759

GHC Trac Issues: #12725, #12004