Blank line removal
Also need dat1FixNameCell for completeness

[too many things are changing at once]
Fill name buffer with known text regardless of status
Stub for datPrmry

Does nothing apart from indicate that a locator is always primary.
Modify Fortran locator I/O

No longer clone the locator as this doesn't work for file mapping
which does not copy to the clone. We now simply treat the Fortran
locator as if it is the pointer and is just extracted and passed
around.

dat1_import_floc is now removed and datImportFloc should be
used everywhere.
Dimensions are now transposed when going in and out of HDF5

HDS is always Fortran order.

HDF5 is always C order.y