Synaptics TouchPad driver

http://www.synaptics.com/support/dev_support.cfm

20010620a
	Just identify the TouchPad.
	Drives the device in the mouse compatible mode.
	Disables tap and drag.

20010627b
	Drives the device in the absolute (native) mode.
	No tap and drag.

20010702a
	Something was wrong; it drives now truly in absolute mode.
	Preliminary support of tap and scroll.

20010704a
	Improve scrolling.


TODO:
	Improve detecting scrolling
	Implement drag & drop
	Implement ioctls for customization
	Look for a good acceleration algorithm