[phobos] [D-Programming-Language/phobos] 08ffa1: std.conv: improve toChars()

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/phobos
  Commit: 08ffa1d2b563580d245ca6782b6c950b9f93f01e
      https://github.com/D-Programming-Language/phobos/commit/08ffa1d2b563580d245ca6782b6c950b9f93f01e
  Author: Walter Bright <walter at walterbright.com>
  Date:   2016-01-15 (Fri, 15 Jan 2016)

  Changed paths:
    M std/conv.d

  Log Message:
  -----------
  std.conv: improve toChars()


  Commit: 4898908ae1ec7bc909110bd3f3174dcaf14cd28d
      https://github.com/D-Programming-Language/phobos/commit/4898908ae1ec7bc909110bd3f3174dcaf14cd28d
  Author: Andrei Alexandrescu <andrei at erdani.com>
  Date:   2016-01-15 (Fri, 15 Jan 2016)

  Changed paths:
    M std/conv.d

  Log Message:
  -----------
  Merge pull request #3769 from WalterBright/opttochars

std.conv: improve toChars() performance


Compare: https://github.com/D-Programming-Language/phobos/compare/472931f98f7c...4898908ae1ec