1.0.36.18: remove *MERGE-SORT-TEMP-VECTOR* and *ZAP-ARRAY-DATA-TEMP*

1.0.36.18: remove *MERGE-SORT-TEMP-VECTOR* and *ZAP-ARRAY-DATA-TEMP*

 * STABLE-SORT no longer uses a pre-allocated temporary vector, but
   rather allocates it as-required.

   Based on patch by: Keith James <dev@deoxybyte.co.uk>

 * ADJUST-ARRAY no longer uses a pre-allocated temporary vector, but
   rather allocates is as-required.

 In both cases after the temporary vector is done with, it is
 truncated to 0-length to prevent garbage retention.

 Fixes Launchpad bug #496249.