runtime requests

[Frank Ch. Eigler]

Hi -

The following features would make the runtime code more appetizing
for use by the translator.

- packaging it all into a single file, so it can be easily transcribed
  into the output file, just like the bison parser template

- letting it adapt to a kernel-level or user-level implementation
  solely using a #define

Whether these conventions are supported by reorganizing the current
source, or are produced mechanically by some tool, is not important.


- FChE