Jetpack: Ship 3.2.1 point release code changes to trunk

Full changes here: https://github.com/Automattic/Jetpack/compare/3.2...3.2.1


git-svn-id: https://plugins.svn.wordpress.org/jetpack/trunk@1025832 b8457f37-d9ea-0310-8a92-e5e31aec5664