[dmd-internals] [D-Programming-Language/dmd] 2967cc: Merge pull request #5066 from WalterBright/go2

[GitHub via dmd-internals]

  Branch: refs/heads/dmd-1.x
  Home:   https://github.com/D-Programming-Language/dmd
  Commit: 2967cce935e89c4e7a61d0079813f309903c8baf
      https://github.com/D-Programming-Language/dmd/commit/2967cce935e89c4e7a61d0079813f309903c8baf
  Author: Daniel Murphy <yebblies at gmail.com>
  Date:   2015-09-11 (Fri, 11 Sep 2015)

  Changed paths:
    M src/backend/gdag.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 #5066 from WalterBright/go2

refactor: encapsulate some globals 2