dos2unix, softtabs, whitespace, lowercase filenames, remove obsolete files
add initial mkfile
comment out everything in wl_main
nuke jabhack
begin porting proper

- nuke .equ files from orbit
- move used gfxv_*.h, audio*.h and map*.h stuff to lumps.h
- move version defs to dat.h
- port CheckForEpisodes, and rename it
- exhume a bunch of functions to have Quit() working partially
- move global definitions and declarations used so far to dat.h
- move global macros and prototypes of functions used so far to fns.h
- rename files implicated so far to something simpler
- mkfile: changes out of convenience