Webform Submissions ACL D7

A Drupal 7 port of webform_submissions_acl module.

Webform Submissions ACL provides a neat way to control per-webform who may view/download the webform results. It's worth noting that it doesn't use the ACL module's API, but its own database table. But it seems to work just fine.

There is an issue in their issue queue to finish up a D7 version, but it's not really gotten anywhere. People were probably just happy with the basic patches provided, and maybe added their own locally.

I have requested maintainership of webform_submissions_acl so that this D7 work can just be added straight onto the main module with nice branches and releases, but that may take a while to come through.

So, I'm checking out a copy here where I can lay on the suggested patches, along with additional tweaks and fixes.