Track changes to runlisp.

sys-base is now less dependent on runlisp for setting itself up.
It doesn't run as well as it does through runlisp but it does at
least work.  (The code in sys-base is a clone-and-hack job of
the guts of runlisp: try to keep them in sync.)

Runlisp renamed its command-line arguments variable, to avoid the
annoying conflict with CMU CL's ext:*command-line-strings*; track
this change.