update Makefile for the new gfx.py path

Why isn't the build breaking?
probably fix the pngs target for make

Update the submodule to a version where gfx.py is able to handle the
current paths.

Make some other fixes to Makefile to call gfx.py correctly.
fix gfx/pics/%/front.lz make target

The parameter order was wrong, causing make to always try to make
front.lz files every run.
Merge branch 'master' into remove-extras-fix-make-gfx
Merge branch 'remove-extras-fix-make-gfx' into remove-extras