Replace the malloc.h header with stdlib.h.

--- include/jtp_gen.h.orig	Sun Jun 24 18:57:16 2001
+++ include/jtp_gen.h	Tue Nov 18 05:34:55 2014
@@ -11,7 +11,7 @@
 
 #include "jtp_def.h"
 #include <stdio.h>
-#include <malloc.h>
+#include <stdlib.h>
 #include <string.h>
 
 void jtp_write_log_message(char * logmessage);
