[Coco] OS-9 environment variables?

[James Jones]

Using data modules for environment variables will take some work:

1. The hefty size of the smallest hunk of RAM that one can map into one's
address space on the CoCo3 will cause some problems.
2. It will take some work to have them implement what people canonically
think of as environment variables, namely things that are inherited by
processes, and that don't change for one process if another fiddles with its
environment variables.
3. It will also involve some changes to the C library, since people will
probably expect access to said variables from C programs.

James