[phobos] [D-Programming-Language/phobos] ad1343: add hexString()

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/phobos
  Commit: ad1343b5520a2123a443b3d944a4eb68c302cd49
      https://github.com/D-Programming-Language/phobos/commit/ad1343b5520a2123a443b3d944a4eb68c302cd49
  Author: Walter Bright <walter at walterbright.com>
  Date:   2015-04-27 (Mon, 27 Apr 2015)

  Changed paths:
    M std/conv.d

  Log Message:
  -----------
  add hexString()


  Commit: f345d1ac5edd1fe594fb3180243866071949d75f
      https://github.com/D-Programming-Language/phobos/commit/f345d1ac5edd1fe594fb3180243866071949d75f
  Author: Martin Nowak <code at dawg.eu>
  Date:   2015-05-02 (Sat, 02 May 2015)

  Changed paths:
    M std/conv.d

  Log Message:
  -----------
  Merge pull request #3133 from WalterBright/hexString

add std.conv.hexString() to replace core language hex strings


Compare: https://github.com/D-Programming-Language/phobos/compare/965744f7d010...f345d1ac5edd