Added public files

Roughly added all public files. Probably missed some, though.
diff --git a/secure/simul_efun/query_editing.c b/secure/simul_efun/query_editing.c
new file mode 100644
index 0000000..5146dcd
--- /dev/null
+++ b/secure/simul_efun/query_editing.c
@@ -0,0 +1,17 @@
+/* This sefun is to provide a replacement for the efun query_editing().
+ * Feel free to add it to your mudlibs, if you have much code relying on that.
+ */
+
+#if ! __EFUN_DEFINED__(query_editing)
+
+#include <interactive_info.h>
+
+int|object query_editing(object ob)
+{
+    if(!efun::interactive(ob))
+        return 0;
+
+    return efun::interactive_info(ob, II_EDITING);
+}
+
+#endif