Multiple changes to help support Windows native ssh with sshscript workers. Defaults are to assume a non-hostile posix environment. - Don't hardcode the tempdir separator character. - Allow overrides in the payload of any exposed net-ssh options. - Allow setting of the "delete" command for script cleanup (ie, 'del') - Allow running the script via a specific interpreter. An example payload to make this work with Windows native ssh/powershell to execute a ruby script: payload = { 'compression' => false, 'delete_cmd' => 'del', 'run_binary' => 'ruby', 'tempdir' => '' }