DDS4CCM_ — MultiWriter

For MultiWriter we have: unsigned long write(in T$Seq instances) // returns nb of written raises (InternalError); But, when write fails we get an exception. So, when it success all data has been written and then the return value is not needed. I would recommend to make this method void. In case it succeeds all instances are written, if it fails, the exception will tell you the number failed, so it the number written is one less then the number failed

Disposition: See issue 14182 for disposition