Rewrote demo.c to use the new format of the library.  No structs
Rewrote demo.c to use the new format of the library.  No structs

Everything is call by pin number.  Everything is hidden in the
library.  Should work on DragonBoard, HiKey and Bubblegum.  Needs
testing on all of them now.

96boards/96BoardsGPIO,96boards/96BoardsGPIO,96boards/96BoardsGPIO,96boards/96BoardsGPIO