Changes for 3.5.4

git-svn-id: https://plugins.svn.wordpress.org/smart-manager-for-wp-e-commerce/trunk@836059 b8457f37-d9ea-0310-8a92-e5e31aec5664
Releasing 3.5.4

git-svn-id: https://plugins.svn.wordpress.org/smart-manager-for-wp-e-commerce/trunk@836061 b8457f37-d9ea-0310-8a92-e5e31aec5664