[phobos] [D-Programming-Language/phobos] 7a3837: Remove and explain Flag alias antipattern

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/phobos
  Commit: 7a3837095ba2133a2e5856daedde512c89c42ead
      https://github.com/D-Programming-Language/phobos/commit/7a3837095ba2133a2e5856daedde512c89c42ead
  Author: Brad Anderson <eco at gnuk.net>
  Date:   2016-01-22 (Fri, 22 Jan 2016)

  Changed paths:
    M std/typecons.d

  Log Message:
  -----------
  Remove and explain Flag alias antipattern


  Commit: 5fa89e948196520ad0febce55e06234a485c8bc6
      https://github.com/D-Programming-Language/phobos/commit/5fa89e948196520ad0febce55e06234a485c8bc6
  Author: Andrei Alexandrescu <andrei at erdani.com>
  Date:   2016-01-22 (Fri, 22 Jan 2016)

  Changed paths:
    M std/typecons.d

  Log Message:
  -----------
  Merge pull request #3947 from eco/patch-15

Remove suggestion in documentation to add an alias to uses of Flag


Compare: https://github.com/D-Programming-Language/phobos/compare/0d639cc6ee66...5fa89e948196