Fixed fonts for draw/fill char/string. On my display I require
GDISP_SOFTWARE_TEXTFILLDRAW for filled char/string but that may because
my display blit may be broken.
Also found that code in header files doesn't have debug symbols
generated for it so I converted the include files that contained code
into real C files and altered the halext.mk to match.
Created gdisp_fonts.h to describe the internal structure of a font.
Moved template directory to templates and created a sub-folder for each
low level driver type.
Moved the pre-defined font data and emulation code into better
locations.
Changed the emulation code to be included in the low level driver (where
it should be) instead of the high level driver.
Added new low level driver gdispS6d1121 (someone please test)
Updated and added new readme's.
