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/condition_variable.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <Alepha/Alepha.h>
+
+#include <Alepha/Truss/thread_common.h>
+
+#include <condition_variable>
+
+#include <boost/thread/condition_variable.hpp>
+
+namespace Alepha::Hydrogen::Truss
+{
+	ALEPHA_BOOST_THREAD namespace BoostThread
+	{
+		using boost::condition_variable_any;
+
+		using condition_variable= condition_variable_any;
+
+		using condition= condition_variable;
+	}
+
+	ALEPHA_STD_THREAD namespace StdThread
+	{
+		using std::condition_variable_any;
+
+		using condition_variable= condition_variable_any;
+
+		using condition= condition_variable;
+	}
+}