mccode-r.c: Define special # type for event lists

[willend]

I suggest that we put this inside mcdetector_import():

  /* from rank, set type */
  switch (detector.rank) {
    case 0:  strcpy(detector.type,  "array_0d"); m=n=p=1; break;
    case 1:  snprintf(detector.type, CHAR_BUF_LENGTH, "array_1d(%ld)", m*n*p); m *= n*p; n=p=1; break;
    case 2:  if(!strcasestr(detector.format,"list")) {
               snprintf(detector.type, CHAR_BUF_LENGTH, "array_2d(%ld, %ld)", m, n*p); n *= p; p=1; 
             } else {
               snprintf(detector.type, CHAR_BUF_LENGTH, "list(%ld, %ld)", m, n*p); n *= p; p=1; 
             }
             break;
    case 3:  snprintf(detector.type, CHAR_BUF_LENGTH, "array_3d(%ld, %ld, %ld)", m, n, p); break;
    default: m=0; strcpy(detector.type, ""); strcpy(detector.filename, "");/* invalid */
  }

• I did test it already, works fine wrt. the output files, but each of the plotters need to be revisited independently... Consider doing this for next release.
• Legacy PGPLOT mcplot works out of the box with a warning, some of the other plotters "burp" and die...

[willend]

Putting this one on hold for later