Added GINPUT Dial support and a driver that uses GADC to read the dial.
Added support for Dial inputs to the GWIN slider.
Updated the slider demo for Dial Inputs.
Simplified the assigning of inputs to GWIN "widgets" button and slider.
Updated the demo's to match the new input to button assignment.
For some GWIN controls they support a Draw() routine.
For those controls the base class now supports a generic Draw routine
which will call their specific Draw routine.
The only GWIN's with a Draw routine currently are Buttons and Sliders.
Add option GWIN_BUTTON_LAZY_RELEASE. When set to true in gfxconf.h it
changes gwin button behaviour to not require the mouse/touch be over the
button when it is released.
Create global include file called gfx.h which knows about sub-system
dependancies.
Deprecate Touchscreen (GINPUT touch is now working properly)
Merge Graph into GWIN
Change directory structure to reflect sub-system structure
Many small bugs fixed
Split Nokia6610 gdisp driver into GE8 and GE12 controller versions
Fixed broken demos.
GFX sub-systems are now clearly defined and new ones should be much
easier to add.
