Problem: can't rely on consistent radix
Problem: can't rely on consistent radix

This means source code isn't portable between locales.

Solution: provide own strtod and additionally, allow either period
or comma, as there is no confusion.

LeptaSpace/zs,hintjens/zs,hintjens/zs,LeptaSpace/zs,hintjens/zs,LeptaSpace/zs