[phobos] [D-Programming-Language/phobos] a894b3: Improved constraints and front() for setUnion

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/phobos
  Commit: a894b3d5aa61a4574a5d62f01d7c301844d8e6fc
      https://github.com/D-Programming-Language/phobos/commit/a894b3d5aa61a4574a5d62f01d7c301844d8e6fc
  Author: Andrei Alexandrescu <andrei at erdani.com>
  Date:   2015-02-14 (Sat, 14 Feb 2015)

  Changed paths:
    M std/algorithm/setops.d

  Log Message:
  -----------
  Improved constraints and front() for setUnion


  Commit: d494e27c359fbc676e20454bcb10b04dd6969d64
      https://github.com/D-Programming-Language/phobos/commit/d494e27c359fbc676e20454bcb10b04dd6969d64
  Author: H. S. Teoh <hsteoh at quickfur.ath.cx>
  Date:   2015-02-14 (Sat, 14 Feb 2015)

  Changed paths:
    M std/algorithm/setops.d

  Log Message:
  -----------
  Merge pull request #2985 from andralex/SetUnionConstraint

[TRIVIAL] Improved constraints and front() for setUnion


Compare: https://github.com/D-Programming-Language/phobos/compare/b42c1bddda24...d494e27c359f