[phobos] [D-Programming-Language/phobos] 7afcc1: std.range.chain() - remove bug workaround

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/phobos
  Commit: 7afcc10fe1f01a0d28bdebe82bd76ec3b0f97340
      https://github.com/D-Programming-Language/phobos/commit/7afcc10fe1f01a0d28bdebe82bd76ec3b0f97340
  Author: Walter Bright <walter at walterbright.com>
  Date:   2015-05-11 (Mon, 11 May 2015)

  Changed paths:
    M std/range/package.d

  Log Message:
  -----------
  std.range.chain() - remove bug workaround


  Commit: 6309ea420dcc8109405e8ee399a45ae9193f7679
      https://github.com/D-Programming-Language/phobos/commit/6309ea420dcc8109405e8ee399a45ae9193f7679
  Author: Martin Nowak <code at dawg.eu>
  Date:   2015-05-12 (Tue, 12 May 2015)

  Changed paths:
    M std/range/package.d

  Log Message:
  -----------
  Merge pull request #3272 from WalterBright/rmworkaround

std.range.chain() - remove bug workaround


Compare: https://github.com/D-Programming-Language/phobos/compare/81536b8f6670...6309ea420dcc