Forgot about the svr4 dynloader stuff

From: Frank Ridderbusch <ridderbusch.pad@sni.de>

src/backend/port/dynloader/svr4.c

@@ -0,0 +1,4 @@
+/* Dummy file used for nothing at this point
+ *
+ * see svr4.h
+ */

src/backend/port/dynloader/svr4.h

@@ -0,0 +1,34 @@
+/*-------------------------------------------------------------------------
+ *
+ * dynloader.h--
+ *	  port-specific prototypes for Intel x86/Intel SVR4
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: svr4.h,v 1.1 1998/02/24 03:41:58 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef DYNLOADER_H
+#define DYNLOADER_H
+
+#include <dlfcn.h>
+#include "fmgr.h"				/* for func_ptr */
+#include "utils/dynamic_loader.h"
+
+/* dynloader.h */
+/*
+ * Dynamic Loader on Intel x86/Intel SVR4.
+ *
+ * this dynamic loader uses the system dynamic loading interface for shared
+ * libraries (ie. dlopen/dlsym/dlclose). The user must specify a shared
+ * library as the file to be dynamically loaded.
+ *
+ */
+#define pg_dlopen(f)	dlopen(f,RTLD_LAZY)
+#define pg_dlsym		dlsym
+#define pg_dlclose		dlclose
+#define pg_dlerror		dlerror
+
+#endif							/* DYNLOADER_H */