Fix 1499

[Danthar]

Instead of simply rethrowing an exception we use
ExceptionDispatchInfo.Capture to preserve the stacktrace. This is an >=
Net 4.5 feature only.

[Danthar]

I know there has been done some work to support lower versions of .Net. Since this PR for #1499 contains an 4.5 feature. We might want to look into alternatives ?

I saw some work is done in regards to backporting I wonder if mono has an implementation for this class, which we might use.

[Danthar]

It seems mono has its own implementation which is .net 4 compatible. https://github.com/mono/mono/tree/5.7/mcs/class/corlib/System.Runtime.ExceptionServices

[Danthar]

To be clear. I could use some feedback on this issue regarding which direction we should take.

[Aaronontheweb]

@Danthar For the time being, I think we use this - so it should still work on Mono 4.+ then?

[Danthar]

I checked the mono repo. Its been in there for a while 3.* already has it. Only its not until mono 4.0 that the ifdef .net 4.5 got removed. So in short yes it should work on mono 4.

[Aaronontheweb]

Sounds good - I think in terms of doing whatever we need to do support Unity3D.... not a priority right now. There's plenty of other stuff, like the TPL, they don't have access to that's already heavily used in Akka.NET.