add U8glib library to Arduino1.x includes
FIX: adopted latest changes from hitachi implementation
Removed STB custom font hack from u8glib library and moved to marlin project
Added RepRapDiscount FULL GRAPHIC Smart Controller
FIX: Speedup - no explicit display clear needed in u8glib
Merge pull request #452 from MStohn/Marlin_v1

128x64 RepRapDiscount Full Graphic Smart Controller support