Description:
------------
PDOStatement::getColumnMeta death at client lib pgsql 8.1.0
both in windows and linux/unix


Reproduce code:
---------------
<?php
$select = $DB->query('SELECT COUNT(*) FROM fruit');
$meta = $select->getColumnMeta(0);
var_dump($meta);
?> 

Expected result:
----------------
array(6) {
  ["native_type"]=>
  string(7) "integer"
  ["flags"]=>
  array(0) {
  }
  ["name"]=>
  string(8) "COUNT(*)"
  ["len"]=>
  int(-1)
  ["precision"]=>
  int(0)
  ["pdo_type"]=>
  int(2)
}


Actual result:
--------------
no 
it's death.

when i change back to pgsql lib 8.0.1
it's running very well