notnull should be not null

In both the stable and developmental version the dashboard install script has

        'col' => array(
          'type' => 'int',
          'size' => 'tiny',
          'unsigned' => TRUE,
          'notnull' => TRUE,
        ),

Instead of:

        'col' => array(
          'type' => 'int',
          'size' => 'tiny',
          'unsigned' => TRUE,
          'not null' => TRUE,
        ),

for the dashboard_widget table

This causes problems for databases where the default is not null when this is not specified such as:
Query failed: ERROR: null value in column "conf" violates not-null constraint in ..