new tag for 6.7.4.1

git-svn-id: https://plugins.svn.wordpress.org/nextgen-facebook/trunk@768379 b8457f37-d9ea-0310-8a92-e5e31aec5664
comment update

git-svn-id: https://plugins.svn.wordpress.org/nextgen-facebook/trunk@768380 b8457f37-d9ea-0310-8a92-e5e31aec5664
stable tag 6.7.4.1

git-svn-id: https://plugins.svn.wordpress.org/nextgen-facebook/trunk@768381 b8457f37-d9ea-0310-8a92-e5e31aec5664