[phobos] [D-Programming-Language/phobos] 1573b9: fix isDir for alias this'd strings

[GitHub via phobos]

  Branch: refs/heads/stable
  Home:   https://github.com/D-Programming-Language/phobos
  Commit: 1573b983045b5bd355318618a271e3428134edc3
      https://github.com/D-Programming-Language/phobos/commit/1573b983045b5bd355318618a271e3428134edc3
  Author: Rainer  Schuetze <r.sagitario at gmx.de>
  Date:   2015-10-22 (Thu, 22 Oct 2015)

  Changed paths:
    M std/file.d

  Log Message:
  -----------
  fix isDir for alias this'd strings


  Commit: e0de691f552a2946071819ab2926d7b33917be2f
      https://github.com/D-Programming-Language/phobos/commit/e0de691f552a2946071819ab2926d7b33917be2f
  Author: Rainer  Schuetze <r.sagitario at gmx.de>
  Date:   2015-10-22 (Thu, 22 Oct 2015)

  Changed paths:
    M std/file.d

  Log Message:
  -----------
  removed ditto to keep overload undocumented


  Commit: f35d013be13981f9d0d6e0afc9b191eed9fdb5a4
      https://github.com/D-Programming-Language/phobos/commit/f35d013be13981f9d0d6e0afc9b191eed9fdb5a4
  Author: Martin Nowak <code at dawg.eu>
  Date:   2015-10-22 (Thu, 22 Oct 2015)

  Changed paths:
    M std/file.d

  Log Message:
  -----------
  Merge remote-tracking branch 'upstream/pr/3762' into stable


Compare: https://github.com/D-Programming-Language/phobos/compare/a089ec3ca9ca...f35d013be139