This Amazon Mechanical Turk (MTurk) SDK is no longer under active development as of 1/1/2018. The latest MTurk SDKs, with support for most common programming languages, are now a part of the Amazon Web Service (AWS) SDKs at https://aws.amazon.com/tools/. With the AWS SDKs, you can also connect to MTurk using the AWS Command Line Interface (https://aws.amazon.com/cli/), allowing you to perform operations from your Windows, Mac, or Linux command line without having to write code.
If you need to access an archive of this code, you may find it here https://github.com/awslabs/mturk-legacy-sdks/tree/master/perl-sdk.