Don't use xf86OpenSerial() for the serial setup code and use a custom
code to read bytes from the serial port.

Hardcode the serial parameters as 9600 baud 8N1. It doesn't make
sense to advertise it as something that can be changed in the man page.

Add the "ButtonNumber" option to the man page.

Rename the xf86EETIeGalax* symbols as eetiegalax* to match the driver name.

Driver version is now 0.0.7