sort of properly open a hydra-generated PDB file.
Silo (or hydra) botches the Major-Order PDB primitive; the file
needs to be opened with open102=1.
Unfortunately, some variables (e.g.- iparmn) are written correctly...
Presumably meshTV would break if hydra made the mesh array dimensions
consistent with the iparmn dimensions, although my guess is it would
survive switching Major-Order to 102.
interpreted function, defined at i/hydra.i line 86