Huge speedup for union WAS: Maxima/Ecl on 32-bit machine cannot evaluate "apply(union, listify({{..}}))"



It was my bug that converted the nice core nset algorithms from O(n)
to O(n log(n)). My apologies to Stavros and rest of the Maxima
community.

We need users to test nset (and all of Maxima) with big problems.

Barton