committing v3.9.3

git-svn-id: https://plugins.svn.wordpress.org/wordpress-simple-paypal-shopping-cart/trunk@868349 b8457f37-d9ea-0310-8a92-e5e31aec5664
committing v3.9.4

git-svn-id: https://plugins.svn.wordpress.org/wordpress-simple-paypal-shopping-cart/trunk@868875 b8457f37-d9ea-0310-8a92-e5e31aec5664