Add signed receipt tests.

          . " -CAfile $smdir/smroot.pem -out smtst.txt"

    ],

    [

        "signed content MIME format, RSA key, signed receipt request",

        "-sign -in smcont.txt -signer $smdir/smrsa1.pem -nodetach"

          . " -receipt_request_to test@openssl.org -receipt_request_all"

          . " -out test.cms",

        "-verify -in test.cms "

          . " -CAfile $smdir/smroot.pem -out smtst.txt"

    ],

    [

        "signed receipt MIME format, RSA key",

        "-sign_receipt -in test.cms"

          . " -signer $smdir/smrsa2.pem"

          . " -out test2.cms",

        "-verify_receipt test2.cms -in test.cms"

          . " -CAfile $smdir/smroot.pem"

    ],

    [

        "enveloped content test streaming S/MIME format, 3 recipients, keyid",

        "-encrypt -in smcont.txt"