*         [IN, OUT] Pointer initialing containing the size of the "respdata"
 *         buffer.  Before returning, the pointed to value is updated to the
 *         number of bytes written to the buffer.  If this is specified as
 *         NULL, it will not be updated, and "respdata" will be ignored causing
 *         the response data to be discarded.
 *
 * RETURN VALUE
 *     CACKEY_PCSC_S_OK         On success
 *     CACKEY_PCSC_E_GENERIC    On error
 *     CACKEY_PCSC_S_OK           On success
 *     CACKEY_PCSC_E_GENERIC      On error
 *     CACKEY_PCSC_E_TOKENABSENT  If the sending failed because the token is
 *                                absent
 *
 * NOTES
 *     This function will connect to the PC/SC Connection Manager via
 *     cackey_pcsc_connect() if needed.
 *
 *     It will connect to the card in the reader attached to the slot
 *     specified.  It will reconnect to the card if the connection