Account for install profiles

In the function accessible_content_include_library, it looks for the library in a pretty specific location

$result = @include_once('sites/all/libraries/quail/quail/quail.php');

This blocks its inclusion in installation profiles that would want to place the library in profiles/{profile_name}/libraries. Replacing the original call with this one will account for it and fail forward if it's not found in the install profile path.

global $profile;
  // to determine the profile.
  if (!isset($profile)) {
    $profile = variable_get('install_profile', 'default');
  }
  //test the install profile location first
  $result = @include_once('profiles/$profile/libraries/quail/quail/quail.php');
  //if it wasn't found, then test the sites all location
  if (!$result) {
    $result = @include_once('sites/all/libraries/quail/quail/quail.php');
  }

Code is tested and in-use in the ELMS Alpha 5 distribution (to be released shortly).