Log Message:
Bump to 0.6.7 and enable all the build time options we can.
Provide an option knob for building against dbus.

New features in 0.6.7
 * added support for Wi-Fi Protected Setup (WPS)
 * added support for EAP-AKA
 * added support for using driver_test over UDP socket
 * updated management frame protection to use IEEE 802.11w/D7.0