Comment 327 for bug 582809

I modify my patchs (base on Takashi work). It works with my HP Envy 17.
The modifications ares :
- Modify the synaptics.conf to add the sofbuttonareas ("Option "SoftButtonAreas" "60% 0 82% 0 40% 60% 82% 0")
- Add a new property double tap led status to works with synclient and syndaemon. So, if you disable the touchpad with double-tap on led, the syndaemon is by-pass. If you re-enable the touchpad with double-tap on led or with synclient (TouchpadOff=0), the syndaemon continues to work.
- Modify the the softbuttonaras to accept float as parameter and if right_left = middle_right, soustract 1 to middle_right (for example, 60.5% 0 82.3% 0 40% 60.5% 82.3% 0).
- To enable or disable the double tap on led, I modify the double-tap size (double of the MaxDoubleTapTime) because it was difficult to double tap on led.