S3 File Location and Better Error Message

Hi Folks,

Thanks for the great module and the AWS S3 support!

Now backup_migrate expects S3.php to be at:

sites/all/modules/backup_migrate/includes/S3.php

I'd prefer to put it at:

sites/all/libraries/backup_migrate/S3.php

It makes updating my sites easier.

Also regarding the error message text: The error message communicating the missing S3.php file should be explicit about the path that backup_migrate expects for placement of the file.

Again, thanks much,

Shai Gluskin