Fixed README formatting
Small changes to Makefile, allows you to enable/disable debugging easily.
Added more debugging information, fixed ask_str() to ignore any extra characters,
after the 16 char limit, instead of overflowing into the next stat.
Hopefully made new_game() a *tiny* bit faster using better logic.
Gversion now tells you if version number is undefined when called interactively.
Moved version failure logic to Gversion, to fail when called non-interactively.
Fixed a few of the assertions in cmd.c