defined why2_strdup

I hope I won't fuck up anything by this

src/core/lib/utils/memory.c

@@ -7,9 +7,7 @@
 #include <why2/memory.h>
 
 #include <stdlib.h>
-#include <stdio.h>
+#include <string.h>
-
-#include <why2/flags.h>
 
 //LOCAL
 typedef struct node
@@ -107,6 +105,15 @@ void *why2_realloc(void *pointer, unsigned long size)
     return allocated;
 }
 
+char *why2_strdup(char *string)
+{
+    char *allocated = strdup(string);
+
+    push_to_list(allocated);
+
+    return allocated;
+}
+
 void why2_free(void *pointer)
 {
     //VARIABLES