[dmd-internals] [D-Programming-Language/dmd] a9902c: update with D2 backend changes

[GitHub via dmd-internals]

  Branch: refs/heads/dmd-1.x
  Home:   https://github.com/D-Programming-Language/dmd
  Commit: a9902c66512b81adaa17571a39af02c32651c2a9
      https://github.com/D-Programming-Language/dmd/commit/a9902c66512b81adaa17571a39af02c32651c2a9
  Author: Walter Bright <walter at walterbright.com>
  Date:   2015-06-24 (Wed, 24 Jun 2015)

  Changed paths:
    M src/backend/blockopt.c
    M src/backend/cc.h
    M src/backend/cdef.h
    M src/backend/cdeflnx.h
    M src/backend/cgcod.c
    M src/backend/cgcs.c
    M src/backend/cgcv.c
    M src/backend/cgelem.c
    M src/backend/cgen.c
    M src/backend/cgobj.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/cppman.c
    M src/backend/cv8.c
    M src/backend/debug.c
    M src/backend/dt.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/el.h
    M src/backend/elfobj.c
    M src/backend/evalu8.c
    M src/backend/gdag.c
    M src/backend/gflow.c
    M src/backend/global.h
    M src/backend/glocal.c
    M src/backend/gloop.c
    M src/backend/go.h
    M src/backend/gother.c
    M src/backend/machobj.c
    M src/backend/mscoffobj.c
    M src/backend/newman.c
    M src/backend/obj.h
    M src/backend/oper.h
    M src/backend/os.c
    M src/backend/out.c
    M src/backend/rtlsym.c
    M src/backend/rtlsym.h
    M src/backend/strtold.c
    M src/backend/symbol.c
    M src/backend/ty.h
    M src/backend/type.c
    M src/backend/type.h
    M src/backend/var.c
    M src/func.c
    M src/mars.h
    M src/mtype.c
    M src/win32.mak

  Log Message:
  -----------
  update with D2 backend changes