Should iterate clause definitions be shadowed in antik-user packages?
As of f9265eee, antik-user packages (as defined by make-user-package) shadow some iterate symbols, like 'for. This means that to use the ordinary iterate symbols, the package prefix is necessary. Since it is expected that the ordinary symbols will be used more frequently than the antik symbols in iterate, perhaps it is better to use the iterate symbols, so that that when antik symbols are needed, the prefix is given.