Update URL for Google's libphonenumber project
Update URL for Google's libphonenumber project

They are now hosted on GitHub instead of Google Code
digideskio/libphonenumber-for-php,sudiptpa/libphonenumber-for-php,gencer/libphonenumber-for-php,giggsey/libphonenumber-for-php,BenMorel/libphonenumber-for-php,lukebeer/libphonenumber-for-php,Xephi/libphonenumber-for-php