Log Message:
Add builtin handling for hesiod. Previously, this was setting
PKG_SKIP_REASION if hesiod was builtin, which was causing dependent
packages (all one of them, AFAICT) to fail in the bulk builds.

Someone who knows more about builtin/buildlink stuff should probably
review this, but to casual inspection at least it seems to work; plus
it's not likely to make anything worse.