"Licensed under Apache" -> "Licensed to the ASF"

git-svn-id: https://svn.apache.org/repos/asf/incubator/wave/branches/wave-0.4-release@1517932 13f79535-47bb-0310-9956-ffa450edef68
Add SimpleJSON license

git-svn-id: https://svn.apache.org/repos/asf/incubator/wave/branches/wave-0.4-release@1517933 13f79535-47bb-0310-9956-ffa450edef68
Remove remaining 'Copyright Google' messages

git-svn-id: https://svn.apache.org/repos/asf/incubator/wave/branches/wave-0.4-release@1517934 13f79535-47bb-0310-9956-ffa450edef68