Unexpected T_CLONE, expecting T_STRING (PHP 7, Drupal 7, Ubuntu 16.04)
PHP 7 is not supported yet - see CRM-17789

Also: this and this

Update (Aug 2017):  The information above was correct when it was written.  Things have moved on and PHP 7.0 is supported from 4.7.12 onwards.  Earlier versions of 4.7 don't run on PHP 7.0 and nor does any released version of 4.6.  There are discussions about adding this to 4.6 - see the same ticket.

The most current information should be on CiviCRM PHP Requirements