Sisc wrapper script breaks spaces.

There are two instances in the sisc wrapper script that don't properly quote $@, one on checkIfNonInteractive, and the other on the call to rlwrap. Both of these should be quoted. Technically, the $0 should also be quoted as well, but that only would be a problem if the sisc script were renamed to something with a space.

$ sisc -e '(+ 123 4)'
Error in load: error opening 'file:123'.