Added public files

Roughly added all public files. Probably missed some, though.
diff --git a/sys/guard.h b/sys/guard.h
new file mode 100644
index 0000000..9cc477f
--- /dev/null
+++ b/sys/guard.h
@@ -0,0 +1,12 @@
+// MorgenGrauen MUDlib
+//
+// guard.h -- Definition fuer P_GUARD-Property von NPCs.
+//
+// $Id: guard.h 7701 2010-10-24 20:38:37Z Zesstra $
+
+#ifndef _GUARD_H_
+#define _GUARD_H_
+
+#define P_GUARD "guard"
+
+#endif