[phobos] [D-Programming-Language/installer] d16562: Only allow one instance of Windows installer

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/installer
  Commit: d16562445e60e462e28a2c0fcb2b5cad1f98511d
      https://github.com/D-Programming-Language/installer/commit/d16562445e60e462e28a2c0fcb2b5cad1f98511d
  Author: Brad Anderson <eco at gnuk.net>
  Date:   2014-07-03 (Thu, 03 Jul 2014)

  Changed paths:
    M windows/dinstaller.nsi

  Log Message:
  -----------
  Only allow one instance of Windows installer

Ported from linux\win\installer.nsi


  Commit: 1816440c7dc8ffbd88c36563647c1667f5941090
      https://github.com/D-Programming-Language/installer/commit/1816440c7dc8ffbd88c36563647c1667f5941090
  Author: Brad Anderson <eco at gnuk.net>
  Date:   2014-07-03 (Thu, 03 Jul 2014)

  Changed paths:
    M windows/dinstaller.nsi

  Log Message:
  -----------
  Uninstall previous versions before installation

Ported from linux\win\installer.nsi


  Commit: 552d2812956bff7bbb41dc76bddeb8c71ab80477
      https://github.com/D-Programming-Language/installer/commit/552d2812956bff7bbb41dc76bddeb8c71ab80477
  Author: Brad Anderson <eco at gnuk.net>
  Date:   2014-07-03 (Thu, 03 Jul 2014)

  Changed paths:
    M windows/dinstaller.nsi

  Log Message:
  -----------
  Make D2 installation mandatory on Windows


  Commit: bcc09c9fdfbb7e1ce00e82210f5a26105ebccd41
      https://github.com/D-Programming-Language/installer/commit/bcc09c9fdfbb7e1ce00e82210f5a26105ebccd41
  Author: Jordi Sayol <g.sayol at yahoo.es>
  Date:   2014-07-04 (Fri, 04 Jul 2014)

  Changed paths:
    M windows/dinstaller.nsi

  Log Message:
  -----------
  Merge pull request #83 from eco/port-linux-nsis-features

Port Windows installer features from linux\win version


Compare: https://github.com/D-Programming-Language/installer/compare/f818c7521b50...bcc09c9fdfbb