fixed Record::hasRelation() to call Table::hasRelation() instead of old Table::hasForeignkey()

Doctrine/Record.php

@@ -860,7 +860,7 @@ abstract class Doctrine_Record extends Doctrine_Access implements Countable, Ite
     public function hasRelation($name) {
         if(isset($this->data[$name]) || isset($this->id[$name]))
             return true;
-        return $this->table->hasForeignKey($name);
+        return $this->table->hasRelation($name);
     }
     /**
      * getIterator