[dmd-internals] [D-Programming-Language/dmd] 40ac20: update with D2

[GitHub via dmd-internals]

  Branch: refs/heads/dmd-1.x
  Home:   https://github.com/D-Programming-Language/dmd
  Commit: 40ac20406e7c41167e08df04987f4b675ec021aa
      https://github.com/D-Programming-Language/dmd/commit/40ac20406e7c41167e08df04987f4b675ec021aa
  Author: Walter Bright <walter at walterbright.com>
  Date:   2015-02-07 (Sat, 07 Feb 2015)

  Changed paths:
    M src/backend/aa.c
    M src/backend/aa.h
    M src/backend/blockopt.c
    M src/backend/cgcs.c
    M src/backend/cgelem.c
    M src/backend/cod1.c
    M src/backend/cod2.c
    M src/backend/cod3.c
    M src/backend/cod4.c
    M src/backend/code.h
    M src/backend/cv8.c
    M src/backend/debug.c
    M src/backend/dt.h
    M src/backend/dwarf.c
    M src/backend/dwarf.h
    M src/backend/dwarf2.h
    M src/backend/el.c
    M src/backend/elfobj.c
    M src/backend/evalu8.c
    M src/backend/gdag.c
    M src/backend/gflow.c
    M src/backend/gloop.c
    M src/backend/machobj.c
    M src/backend/mscoffobj.c
    M src/backend/nteh.c
    M src/backend/oper.h
    M src/backend/optabgen.c
    M src/backend/pdata.c
    M src/backend/ph2.c
    M src/backend/platform_stub.c
    M src/backend/rtlsym.h
    M src/backend/symbol.c
    M src/backend/ti_achar.c
    M src/backend/ti_pvoid.c
    M src/backend/tinfo.h
    M src/func.c

  Log Message:
  -----------
  update with D2