[phobos] [dlang/phobos] 7a6a73: Add @system to std.signal unit tests

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/dlang/phobos
  Commit: 7a6a73c4847b1197e5c4ac8fe86d654e5af4e32d
      https://github.com/dlang/phobos/commit/7a6a73c4847b1197e5c4ac8fe86d654e5af4e32d
  Author: Atila Neves <atila.neves at gmail.com>
  Date:   2016-07-01 (Fri, 01 Jul 2016)

  Changed paths:
    M std/signals.d

  Log Message:
  -----------
  Add @system to std.signal unit tests


  Commit: 8668a7a4c05ca2e851a143c74c645056016d497b
      https://github.com/dlang/phobos/commit/8668a7a4c05ca2e851a143c74c645056016d497b
  Author: Walter Bright <WalterBright at users.noreply.github.com>
  Date:   2016-07-01 (Fri, 01 Jul 2016)

  Changed paths:
    M std/signals.d

  Log Message:
  -----------
  Merge pull request #4518 from atilaneves/std_signal_ut

Add @system to std.signals unit tests


Compare: https://github.com/dlang/phobos/compare/a998ffc45548...8668a7a4c05c