Fix the build. Commented out code that is missing #defines

add direct support for hardware cursor on Summit

make sure we log a found message for every device:
[ 2209.958] (II) NGLEPreInit: found Visualize FX 2/4/6 ( GID 2fc1066b )
[ 2209.971] (II) NGLEPreInit: found HCRX ( GID 2bcb015a )

allow more than one device section

add *very* experimental Visualize FX support

due to the strange way colour maps and cursor bitmaps are accessed on at least
some cards, make sure we do not skip the PrepareAccess() dance after those.

set the right visual type for 8bit colour

add HCRX support

some cleanup:
- consistetly use buffer 0 - makes no difference when double buffering is
disabled ( which it should be ) but may bite us if it isn't
- add some comments on why we do what we do

add acceleration, Visualize EG only for now

very humble beginnings of a native driver for HP's NGLE family of graphics
devices