Description:
------------
mysql_fetch_field returns type = "string" for enum fields in the MySQL database, 
but should instead return "enum" and an array of possible values for convenience.

Test script:
---------------
<?php
$connect = mysql_connect('localhost','user','password');
mysql_select_db('some_database',$connect);
$query = mysql_query('SELECT * FROM table');
var_dump(mysql_fetch_field($query,1));
?>

Expected result:
----------------
array(12) {
...
["type"]=>
string(6) "string"
...
}

Actual result:
--------------
array(12) {
...
["type"]=>
array(3) {
string(1) "a"
[1]=>
string(1) "b"
[2]=>
string(1) "c"
}
...
}