Merge branch 'release-4.2.0' into develop

Conflicts:
	packaging/nuget/nservicebus.host.nuspec
	packaging/nuget/nservicebus.host32.nuspec
Updated Samples

closes #1726
Fixing the exe name of the host

Fixes #1727
The actual fix for #1727
Merge branch 'develop' of github.com:Particular/NServiceBus into develop
Merge branch 'release-4.2.0' into develop