laravel/framework — pull request #590 by luisdalmolin (2013-03-15 20:23:52+00:00)
Title: Added option to create an autoincrement not unsigned in SchemdBuilder

We are not able to create a primary key, with autoincrement and **not** unsigned.

With theses changes, we can do this now:

```php
Schema::create('products', function($table)
{
$table->increments('id') // unsigned
$table->increments('id', false); // not unsigned
});
```