File::GetImageOrientationPatient now acts as follow :

File::GetImageOrientationPatient now acts as follow :
/**
  * \brief gets the info from 0020,0037 : Image Orientation Patient
  *                   or from 0020 0035 : Image Orientation (RET)
  *
  * (needed to organize DICOM files based on their x,y,z position)
  *
  * @param iop adress of the (6)float array to receive values.
  *        (defaulted as 1.,0.,0.,0.,1.,0. if nothing -or inconsistent stuff-
  *        is found.
  * @return true when one of the tag -with consistent values- is found
  *         false when nothing or inconsistent stuff - is found
  */