[phobos] [dlang/phobos] e46cc8: remove spurious x identifier in IsExp

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/dlang/phobos
  Commit: e46cc8ea25a1dd8985f5b93df3442cbfc2eab1c0
      https://github.com/dlang/phobos/commit/e46cc8ea25a1dd8985f5b93df3442cbfc2eab1c0
  Author: Martin Nowak <code at dawg.eu>
  Date:   2016-10-15 (Sat, 15 Oct 2016)

  Changed paths:
    M std/traits.d

  Log Message:
  -----------
  remove spurious x identifier in IsExp

- gets parsed as is(Type Identifier) but an alias identifier isn't needed
- fixup of ee683ae79f (#2624)


  Commit: f75b0e030ef279b62b2c76ba0cb7161be57bd739
      https://github.com/dlang/phobos/commit/f75b0e030ef279b62b2c76ba0cb7161be57bd739
  Author: David Nadlinger <code at klickverbot.at>
  Date:   2016-10-15 (Sat, 15 Oct 2016)

  Changed paths:
    M std/traits.d

  Log Message:
  -----------
  Merge pull request #4861 from MartinNowak/traits_fixup

remove spurious x identifier in IsExp


Compare: https://github.com/dlang/phobos/compare/2090d3300def...f75b0e030ef2