Mouse cursor does not use SDL cursor about grafx2 HOT 6 OPEN

The cursor drawing routine was changed a bit and is now much faster. A full 
screen
updaterect was done, wich was the cause for slow cursor.
However, using the hardware cursor with SDL isn't a bad idea.

Switching to "low priority"

Cursor drawing and erasing is done in graph.c around lines 2200-2700.
However, the basic mouse arrow in grafx2 uses 16 colors and SDL can only display
monochromatic cursor.
The XOR lines will be a bit tricky to handle, also. So maybe this can't be done 
or
will lead to a worse design

Pushing to milestone "2.0"

This will not be done. We need far more capabilities than what SDL can done 
with the 
cursor anyways (rotations, big cursors, multiple colors,...)