[PATCH synaptics] man page updates, misc fixes

[Peter Hutterer]

02-06 simply bring the man page up to date.

07 is the real new feature, allowing percent values for the area, this
should probably be expanded to the edge values as well to save us some
of the rather nightmarish configuration calculations.

11 purges old server support to get rid of a few ifdefs, no other real
reason but I think supporting 4 server releases is enough.

The rest does what it says on the box.

Cheers,
  Peter