[dmd-internals] [D-Programming-Language/dmd] 4f7668: Merge pull request #5067 from WalterBright/go3

[GitHub via dmd-internals]

  Branch: refs/heads/dmd-1.x
  Home:   https://github.com/D-Programming-Language/dmd
  Commit: 4f76684e3b72ec5261a03838b1a9d3819203bb4f
      https://github.com/D-Programming-Language/dmd/commit/4f76684e3b72ec5261a03838b1a9d3819203bb4f
  Author: Daniel Murphy <yebblies at gmail.com>
  Date:   2015-09-12 (Sat, 12 Sep 2015)

  Changed paths:
    M src/backend/debug.c
    M src/backend/gflow.c
    M src/backend/gloop.c
    M src/backend/go.c
    M src/backend/go.h
    M src/backend/gother.c
    M src/backend/var.c

  Log Message:
  -----------
  Merge pull request #5067 from WalterBright/go3

refactor: encapsulate some globals 3