remove a few compiler warnings

CAS.h

@@ -1,5 +1,5 @@
-#ifndef _CAS_H
-#define _CAS_H
+#ifndef CAS_H
+#define CAS_H
 
 #include <stddef.h>
 

iob.h

@@ -1,6 +1,6 @@
 /* this header file comes from libowfat, http://www.fefe.de/libowfat/ */
-#ifndef _IOB_H
-#define _IOB_H
+#ifndef IOB_H
+#define IOB_H
 
 /* These functions can be used to create a queue of small (or large)
  * buffers and parts of files to be sent out over a socket.  It is meant

isset.h

@@ -1,6 +1,6 @@
 /* this header file comes from libowfat, http://www.fefe.de/libowfat/ */
-#ifndef _ISSET_H
-#define _ISSET_H
+#ifndef ISSET_H
+#define ISSET_H
 
 /*
  How to check whether a preprocessor symbol is defined or not?

safemult.h

@@ -1,6 +1,6 @@
 /* this header file comes from libowfat, http://www.fefe.de/libowfat/ */
-#ifndef _SAFEMULT_H
-#define _SAFEMULT_H
+#ifndef SAFEMULT_H
+#define SAFEMULT_H
 
 #include "uint16.h"
 #include "uint32.h"

uint16.h

@@ -18,11 +18,11 @@ static inline void uint16_pack(char* out,uint16 in) {
 }
 
 static inline void uint16_unpack(const char *in,uint16* out) {
-  *out=*(uint16*)in;
+  *out=*(const uint16*)in;
 }
 
 static inline uint16 uint16_read(const char* in) {
-  return *(uint16*)in;
+  return *(const uint16*)in;
 }
 
 void uint16_pack_big(char *out,uint16 in);

uint32.h

@@ -18,11 +18,11 @@ static inline void uint32_pack(char* out,uint32 in) {
 }
 
 static inline void uint32_unpack(const char *in,uint32* out) {
-  *out=*(uint32*)in;
+  *out=*(const uint32*)in;
 }
 
 static inline uint32 uint32_read(const char* in) {
-  return *(uint32*)in;
+  return *(const uint32*)in;
 }
 
 void uint32_pack_big(char *out,uint32 in);