Removed the GDISPDriver strucutre definitions, and as a parameter to
gdispInit.
Added macros for common Control and Query routines
eg. gdispGetWidth ...
Scaled fonts (independantly in x & y direction) based on normal sized
font. Effectively double sized and double height same width fonts come
free (or triple etc).
New routine for sending low level drivers hardware commands eg backlight
brightness, contrast
Power and Orientation moved to new routine.
Clean up on files to simplify low level driver file overheads.
