[R6RS] Final expression in programs

[Anton van Straaten]

William D Clinger wrote:
> In my opinion, the best solution is to add an exit
> procedure to the (r6rs scripts) library (whatever
> it will be called in 5.92) that exits the program
> (i.e. throws to the end of the program).  With no
> arguments, the exit procedure should (not "must")
> tell the OS that the program exited normally.
> With one argument, the exit procedure should (not
> "must") translate the argument in some unspecified
> but presumably OS-appropriate way into the kind of
> exit value that the OS will understand.

This works for me.  The library in question is now called (r6rs 
programs) and also contains the command-line procedure.

I'll add the text for this.  This falls under Robert's Rules as Modified 
by Mike, in which you yell if you object.

Anton