fixes Builder, test

Author: Gianluca

src/Illuminate/Database/Eloquent/Builder.php

@@ -1517,6 +1517,17 @@ public function qualifyColumn($column)
         return $this->model->qualifyColumn($column);
     }
 
+    /**
+     * Qualify the column's lists name by the model's table.
+     *
+     * @param  array|mixed  $columns
+     * @return array
+     */
+    public function qualifyColumns($columns)
+    {
+        return $this->model->qualifyColumns($columns);
+    }
+
     /**
      * Get the given macro by name.
      *

src/Illuminate/Database/Eloquent/Model.php

@@ -440,8 +440,9 @@ public function qualifyColumn($column)
      * @param  array|mixed  $columns
      * @return array
      */
-    public function qualifyColumns(...$columns) 
+    public function qualifyColumns($columns) 
     {
+        $columns = is_array($columns) ? $columns : func_get_args();
         $qualifiedArray = [];
         foreach($columns as $column) {
             $qualifiedArray[] = $this->qualifyColumn($column);

tests/Database/DatabaseEloquentBuilderTest.php

@@ -204,7 +204,7 @@ public function testQualifyColumns()
         $builder->setModel(new EloquentModelStub);
 
         $this->assertSame(['stub.column', 'stub.column2', 'stub.column3'], $builder->qualifyColumns('column', 'column2', 'column3'));
-        $this->assertSame(['stub.column', 'stub.column2', 'stub.column3'], $builder->qualifyColumns(...['column', 'column2', 'column3']));
+        $this->assertSame(['stub.column', 'stub.column2', 'stub.column3'], $builder->qualifyColumns(['column', 'column2', 'column3']));
     }
 
     public function testGetMethodLoadsModelsAndHydratesEagerRelations()