export label of node entry for Array methods for arrays of unboxed records if exporting local labels

using this information the code generator can determine from which
module a label is imported, this is used when generating position
independent code

because the code generator swaps the fields in a FILE node

entry for constructor with the same name as the record

for fields (in other records) with this record type

case, if and lambda expressions

exported, also export label with d prefix for strict constructor and
fix name for label with n prefix

and fix exported label name for unboxed lists of records