Change Details

It seems like we are overly asserting when running `-dead_strip` with exported symbols. ld64 links successfully (or at least no-ops) with `-dead_strip` when a symbol cannot be exported. Loosen the assert to match ld64's behavior.

It seems like we are overly asserting when running `-dead_strip` with exported symbols. ld64 treats exported private extern symbols as a liveness root. Loosen the assert to match ld64's behavior.

It seems like we are overly asserting when running `-dead_strip` with exported symbols. ld64 links successfully (or at least no-ops) with `-dead_strip` when atreats exported private extern symbol cannot be exporteds as a liveness root. Loosen the assert to match ld64's behavior.