Manuel Lemos - 2015-05-27 19:31:56 - In reply to message 1 from waldifubu
Those other files are from packages listed in the Needed Packages section in the Downloads tab.
They are used by the user interface example.
If you want to call the Webmaster Tools class only without user interface, you just need the http.php class file.
Anyway, Google just disabled the Client Login support. A version based on the newer of the Webmaster Tools API that uses OAuth is supposed to be made available soon. I will update the class when it is available.