initial modifications, needs testing

extension/extensionCallback.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include <stdlib.h>
+
+typedef int (*extensionCallback)(char const *name, char const *function, char const *data);
+
+/* https://golang.org/cmd/cgo/#hdr-C_references_to_Go */
+static inline int runExtensionCallback(extensionCallback fnc, char const *name, char const *function, char const *data)
+{
+	return fnc(name, function, data);
+}