fix data-handling errors in gfx.py
gfx.py: get rid of argparse
gfx.py: remove trailing tabs
gfx: lz to png from command line
gfx: fix a typo
Working lz make target
gfx: safer alternating-byte detection in compression
confident enough in lz make target to include it in general compile
get rid of windows build components

who needs those anyway?
Merge pull request #138 from yenatch/master

automated png compression + gfx fixes + no more windows