Allow SoundManager2 to be installed with an installation profile

From what I can tell, you cannot install this module using an installation profile. The reason for this is found in the following code block (lines 30-36 of soundmanager2.install):

  if ($phase == 'install') {
    $requirements['soundmanager2']['title'] = $t('SoundManager2');
    $requirements['soundmanager2']['value'] = $t('SoundManager2: remember!');
    $requirements['soundmanager2']['description'] = $t('You must install <a href="@soundmanager2">SoundManager2</a> to %sm2dir, or <a href="@sm2settings">configure its installation path</a>.', array('@soundmanger2' => 'http://www.schillmania.com/projects/soundmanager2/doc/download/', '%sm2dir' => $sm2_path, '@sm2settings' => url('admin/settings/soundmanager2')));
    $requirements['soundmanager2']['severity'] = REQUIREMENT_INFO;
    return $requirements;
  }

According to the instructions found here, you cannot depend on the full drupal API when you are in the "install" phase of hook_requirements:

Note that the installation of a module can happen during installation of Drupal itself (by install.php) with an installation profile or later by hand. As a consequence, install-time requirements must be checked without access to the full Drupal API, because it is not available during install.php.

The block of code listed above uses the url function, which I don't think is actually available if it's being installed from an installation profile. Furthermore, it seems that the $sm2_path variable is out of scope when this module is installed with an installation profile, so I get an "undefined variable" and WSOD when I try to install.

The attached patch fixes both of these issues.

Thanks again for your work!