Very hacky "C in lisp" toy language.

Hastily written for the Handmade Network 2020 lisp jam.

• Evaluating an unknown symbol loads it via dlsym and calls it.
• There is no type / count checking of arguments.
• It doesn't support a large swath of stuff, e.g.
  • floating point
  • funcs with more arguments than fit in registers (passed on stack)
  • will only run on x86_64 linux
• There are not enough builtin functions, I only wrote the ones needed for the demo program.
• Probably loads of bugs

./peril < demo.txt