First step at reorganizing

src/ifcgeom/schema/bind_convert_impl.i

@@ -0,0 +1,15 @@
+#ifdef BIND
+#undef BIND
+#endif
+
+#define BIND(T) \
+	if (l->declaration().is(IfcSchema::T::Class())) { \
+		try { \
+			return map((IfcSchema::T*)l); \
+		} catch (const std::exception& e) { \
+			Logger::Message(Logger::LOG_ERROR, std::string(e.what()) + "\nFailed to convert:", l); \
+		} \
+		return false; \
+	}
+
+#include "mapping.i"