The most important changes are:
* add suspend/resume support to the sonypi driver (not
based on driverfs however) (Florian Lohoff);
* add "Zoom" and "Thumbphrase" buttons (Francois Gurin);
* add camera and lid events for C1XE (Kunihiko IMAI);
* add a mask parameter letting the user choose what kind
of events he wants;
* use ACPI ec_read/ec_write when available in order to
play nice when latest ACPI is enabled;
* several source cleanups.