[dmd-internals] [D-Programming-Language/dmd] d50d2c: merge with D2 backend

[GitHub via dmd-internals]

  Branch: refs/heads/dmd-1.x
  Home:   https://github.com/D-Programming-Language/dmd
  Commit: d50d2cb2e5a5109676f76cd3a6f319461a05f25d
      https://github.com/D-Programming-Language/dmd/commit/d50d2cb2e5a5109676f76cd3a6f319461a05f25d
  Author: Walter Bright <walter at walterbright.com>
  Date:   2014-09-01 (Mon, 01 Sep 2014)

  Changed paths:
    M src/backend/aa.c
    M src/backend/backconfig.c
    M src/backend/cdef.h
    M src/backend/cgen.c
    M src/backend/cod1.c
    M src/backend/cod3.c
    M src/backend/cv8.c
    M src/backend/el.c
    M src/backend/mscoffobj.c
    M src/backend/out.c
    M src/backend/rtlsym.h

  Log Message:
  -----------
  merge with D2 backend