TAP::Parser::IteratorFactory(3p) on OpenBSD

The text bf8c20ebb9aa, as OpenBSD 7.2, OpenBSD 7.1, OpenBSD 7.0, OpenBSD 6.9 shipped it.

Figures out which SourceHandler objects to use for a given Source

TAP::Parser::IteratorFactory(3p) on OpenBSD now