[phobos] [D-Programming-Language/installer] 935223: fix fetching old DMD version

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/installer
  Commit: 93522339e96d58d038297b22285b44b5a2a934ab
      https://github.com/D-Programming-Language/installer/commit/93522339e96d58d038297b22285b44b5a2a934ab
  Author: Martin Nowak <code at dawg.eu>
  Date:   2014-07-07 (Mon, 07 Jul 2014)

  Changed paths:
    M create_dmd_release/build_all.d

  Log Message:
  -----------
  fix fetching old DMD version

- use git describe to find ancestor release

- add runCapture (returns command output as string)


  Commit: 312739c405ceaf418a116f5df7ab8f3e281e125d
      https://github.com/D-Programming-Language/installer/commit/312739c405ceaf418a116f5df7ab8f3e281e125d
  Author: AndrewEdwards <edwards.ac at gmail.com>
  Date:   2014-07-07 (Mon, 07 Jul 2014)

  Changed paths:
    M create_dmd_release/build_all.d

  Log Message:
  -----------
  Merge pull request #91 from MartinNowak/fixOldDMD

fix fetching old DMD version


Compare: https://github.com/D-Programming-Language/installer/compare/626c2fffc3ab...312739c405ce