Rewrote the copy-alist function so that it doesn't signal and error when the argument contains non-cons elements, and so that it signals a more specific condition when a dotted list is given.
Rewrote the copy-alist function so that it doesn't signal
and error when the argument contains non-cons elements, and so
that it signals a more specific condition when a dotted list
is given.

vtomole/SICL,vtomole/SICL,clasp-developers/SICL,clasp-developers/SICL,clasp-developers/SICL,vtomole/SICL,clasp-developers/SICL,vtomole/SICL