orderBy many field defined in yml files doesnt work

Hi,
When you have defined orderBy table option in yml file, like:

orderBy[ field1 ASC, field2 DESC ]

and models build by doctrine:build --model

Doctrine_Table class reports warnings, when executing select query i.e.:
Warning: array_map() [function.array-map]: Argument #2 should be an array in ....\doctrine\Doctrine\Table.php on line 1134

that's causes no order at all in sql query

quick solution for this problem is change file \doctrine\Doctrine\Table.php, function processOrderBy() - around line 1134

from:

$e1 = explode(',', $orderBy);

to:

if( !is_array($orderBy)){
$e1 = explode(',', $orderBy);
}else{
$e1 = $orderBy;
}

hope it helps to someone

best,
Wojtek