Setting environment variables

Hi,

I've been away from ABCL for some time, so I ask your indulgence in case I'm revisiting a familiar issue. I tried (SETF (UIOP:GETENV "foo") "value") and got

Not (currently) implemented on ABCL: (SETF UIOP/OS:GETENV)

On investigation, I see that the JVM doesn't normally support setting environment variables, but there are known ways to jimmy it into doing so: https://stackoverflow.com/questions/318239/how-do-i-set-environment-variable...

Would a PR to add such a hack to ABCL be welcome, or should I just make it a local mod? Or is there another, recommended way of doing this?

-- Scott