Used error codes (for fatal_error function) in search.php and extrecord.php:

* 1:    1.1 : search.php (mysql errors)
        1.2 : search.php (mysql errors)
        
* 2:    *   : search.php (MPS library errors)

* 3:    3.1 : extrecord.php (mysql errors)
        3.2 : extrecord.php (mysql errors)
      
* 4:    *   : extrecord.php (MPS library errors)