[dmd-internals] [D-Programming-Language/dmd] 2fd07d: update auto_bootstrap dmd to 2.068.2

[GitHub via dmd-internals]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/dmd
  Commit: 2fd07d0d8fc3e65b04cb583521aa51b54ff8ff82
      https://github.com/D-Programming-Language/dmd/commit/2fd07d0d8fc3e65b04cb583521aa51b54ff8ff82
  Author: Martin Nowak <code at dawg.eu>
  Date:   2015-10-31 (Sat, 31 Oct 2015)

  Changed paths:
    M src/posix.mak

  Log Message:
  -----------
  update auto_bootstrap dmd to 2.068.2


  Commit: b33009767ed951947989e6340d2ae2da51d8488d
      https://github.com/D-Programming-Language/dmd/commit/b33009767ed951947989e6340d2ae2da51d8488d
  Author: Martin Nowak <code at dawg.eu>
  Date:   2015-10-31 (Sat, 31 Oct 2015)

  Changed paths:
    M src/posix.mak

  Log Message:
  -----------
  use .tar.xz download when xz is available


  Commit: a7146f3fbb421daec178e0863e07ec10c267eb26
      https://github.com/D-Programming-Language/dmd/commit/a7146f3fbb421daec178e0863e07ec10c267eb26
  Author: Walter Bright <walter at walterbright.com>
  Date:   2015-11-08 (Sun, 08 Nov 2015)

  Changed paths:
    M src/posix.mak

  Log Message:
  -----------
  Merge pull request #5249 from MartinNowak/update_host_dmd

update bootstrap dmd to 2.068.2


Compare: https://github.com/D-Programming-Language/dmd/compare/d08523d48a75...a7146f3fbb42