[gh-492] Upgrade drupal to 7.16
[gh-493] Consult sites/all/settings.php before sites/all/settings.php in unl_get_shared_db_prefix()
Merge pull request #495 from tsteiner2/issue-492

Closes [gh-492] Upgrade drupal to 7.16
Merge pull request #494 from tsteiner2/issue-493

Closes [gh-493]
[gh-445] Update version numbers.