Implemented some ast handlings...

ast lists, and_or, redirection and builtins

src/utils/ast/ast.c

@@ -13,6 +13,10 @@ void ast_free(struct ast **node)
         ast_free_command(ast_get_command(*node));
     else if (ast_is_list(*node))
         ast_free_list(ast_get_list(*node));
+    else if (ast_is_and_or(*node))
+        ast_free_and_or(ast_get_and_or(*node));
+    else if (ast_is_redir(*node))
+        ast_free_redir(ast_get_redir(*node));
 
     free(*node);
     *node = NULL;