This is a crude first draft of a library that tries to look like the C environment
used to program Vectrex games.  The idea is that, as long as programmers restrict
their code to the common subset, a program can be written on Linux or Windows that
will behave about the same when running on a Vectrex.  This is mainly to assist in
debugging the Vectrex code in a more approachable environment.

Clearly full compatibility will never be possible but it'll be interesting to see
how close we can get.

First draft is *extremely* basic.  There's a lot of work to be done.  I'm not going
to publicise this but I will put it on my web site where people might stumble across
it by accident.  No time-scale for development, just as and when I feel like working
on it.

G