GitHub#64 ⁃ Wrong result for id column under certain conditions

Manticore Search version: 2.6.2

Description of the issue:

Manticore sends a wrong result for the id column if value is greater than int64 and the column is aliased.

Steps to reproduce:

Welcome to the MySQL monitor.  Commands end with ; or \g.  
Your MySQL connection id is 1  
Server version: 2.6.2 0bbd194@180223 release  
  
Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.  
  
Oracle is a registered trademark of Oracle Corporation and/or its  
affiliates. Other names may be trademarks of their respective  
owners.  
  
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.  
  
mysql> insert into rt (id) values (18446744073709551614);  
Query OK, 1 row affected (0.00 sec)  
  
mysql> select id from rt;  
+----------------------+  
| id                   |  
+----------------------+  
| 18446744073709551614 |  
+----------------------+  
1 row in set (0.00 sec)  
  
mysql> select id as c1 from rt;  
+------+  
| c1   |  
+------+  
|   -2 |  
+------+  
1 row in set (0.00 sec)  

Reproduce the issue using the provided SQL commands against an RT table, comparing the unaliased and aliased id results for 18446744073709551614. Trace the result conversion or formatting path used for an aliased id, and verify that the aliased query returns the same unsigned value as the unaliased query.