Enough to get text on the screen, but it isn't pretty. No antialiasing,
kerning, vertical placement isn't correct, probably the size isn't even
quite correct, etc.
- Create separate directories for source and header files.
- Build code shared between xsystem4 and aindump as a static library.
- Create header dirs gfx/ system4/ and vm/
- Make CG.c/h usable without a running VM