Bring in the mockination work and Truss from old.

It's all a mess -- not in the new unified form and namespace.
I need to do a big cleanup pass.

Truss/thread.h

@@ -0,0 +1,72 @@
+#pragma once
+
+#include <Alepha/Alepha.h>
+
+#include <Alepha/Truss/thread_common.h>
+
+#include <thread>
+
+#include <boost/thread.hpp>
+
+#include <Alepha/Truss/function.h>
+
+namespace Alepha::Hydrogen::Truss
+{
+	ALEPHA_BOOST_THREAD namespace BoostThread
+	{
+		// If you decide to use Alepha threading primitives, you'll get the boost ones.
+		// Eventually we'd like to add interrupt-with-reason semantics.  That will be in
+		// Alepha::Thread.
+
+		// I'd like to map Alepha::Truss's thread to be only std:: thread eventually.
+		// There will remain "boost::thread" semantics for Alepha, at present.
+		using boost::thread;
+
+		namespace this_thread= boost::this_thread;
+
+		namespace detail_thread
+		{
+			template< typename Ex >
+			auto
+			make_thrower( Ex &&exception )
+			{
+				return [exception]{ throw exception; };
+			}
+		}
+	}
+
+	ALEPHA_STD_THREAD namespace StdThread
+	{
+		// If you decide to use Alepha threading primitives, you'll get the boost ones.
+		// Eventually we'd like to add interrupt-with-reason semantics.  That will be in
+		// Alepha::Thread.
+
+		// I'd like to map Alepha::Truss's thread to be only std:: thread eventually.
+		// There will remain "boost::thread" semantics for Alepha, at present.
+		using ::std::thread;
+
+		namespace this_thread= ::std::this_thread;
+
+		namespace detail_thread
+		{
+			template< typename Ex >
+			auto
+			make_thrower( Ex &&exception )
+			{
+				return [exception]{ throw exception; };
+			}
+		}
+	}
+
+	namespace under_construction
+	{
+		// Built on top of std::thread
+		class thread
+		{
+			private:
+				Alepha::Truss::function< void () > interruption;
+
+				::std::thread thread;
+		};
+	}
+}