Update SZ-Google 1.7.4

git-svn-id: https://plugins.svn.wordpress.org/sz-google/trunk@895317 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update SZ-Google 1.7.4

git-svn-id: https://plugins.svn.wordpress.org/sz-google/trunk@895320 b8457f37-d9ea-0310-8a92-e5e31aec5664