[Issue 2447] There's no disconnectall for std.signals

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=2447

--- Comment #5 from github-bugzilla at puremagic.com ---
Commits pushed to stable at https://github.com/dlang/phobos

https://github.com/dlang/phobos/commit/f0d2655d7535ae16fd681679d75b4c42014348c9
Fix issue 2447 - add disconnectAll for std.signals

https://github.com/dlang/phobos/commit/b5e6365a9bb9e0ca3af194d7add212c092ad1b13
Merge pull request #5812 from edi33416/signals_disconnectall

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