[D-runtime] [D-Programming-Language/druntime] 20f38b: Use osmodel.mak from dmd repo

[GitHub via D-runtime]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/druntime
  Commit: 20f38b7d699a43df57190059f57d865ee7caee5e
      https://github.com/D-Programming-Language/druntime/commit/20f38b7d699a43df57190059f57d865ee7caee5e
  Author: Lionello Lunesu <lio+git at lunesu.com>
  Date:   2015-05-27 (Wed, 27 May 2015)

  Changed paths:
    A osmodel.mak
    M posix.mak

  Log Message:
  -----------
  Use osmodel.mak from dmd repo


  Commit: 7d259767cb94078ba04d7a3ed921c874ae00e637
      https://github.com/D-Programming-Language/druntime/commit/7d259767cb94078ba04d7a3ed921c874ae00e637
  Author: Andrei Alexandrescu <andrei at erdani.com>
  Date:   2015-05-28 (Thu, 28 May 2015)

  Changed paths:
    A osmodel.mak
    M posix.mak

  Log Message:
  -----------
  Merge pull request #1287 from lionello/use_osmodel_mak

Use osmodel.mak from dmd repo


Compare: https://github.com/D-Programming-Language/druntime/compare/1e25749cd01a...7d259767cb94