libhash-util-fieldhash-compat-perl 0.03-2 (amd64 binary) in ubuntu utopic

 Under older perls this module provides a drop in compatible API to
 Hash::Util::FieldHash using perltie. When Hash::Util::FieldHash is available
 it will use that instead.
 .
 This way code requiring field hashes can benefit from fast, robust field
 hashes on Perl 5.10 and newer, but still run on older perls that don't ship
 with that module.