Libspinscale: Initial top-level SMO port to coroutine framework

We haven't ported everything. Just the top-level methods. We'll
dig in to the leaf stuff later. Surprisingly, this all went without
any real difficulties.

Runs like a charm on first try.

smocore/include/director/directorThread.h

@@ -0,0 +1,27 @@
+#ifndef SMO_DIRECTOR_THREAD_H
+#define SMO_DIRECTOR_THREAD_H
+
+#include <boost/asio/io_service.hpp>
+#include <spinscale/co/invokers.h>
+#include <spinscale/co/postingPromise.h>
+
+namespace smo {
+namespace director {
+
+struct DirectorThreadTag
+{
+	static boost::asio::io_service &io_service();
+};
+
+template <typename T>
+using DirectorPostingPromise =
+	sscl::co::TaggedPostingPromise<T, DirectorThreadTag>;
+
+template <typename T>
+using DirectorViralPostingInvoker =
+	sscl::co::ViralPostingInvoker<DirectorPostingPromise, T>;
+
+} // namespace director
+} // namespace smo
+
+#endif // SMO_DIRECTOR_THREAD_H