h4h5tools

Support sinusoidal dimensional scales for HDF-EOS2 grid dataset.
  - create XDim, YDim as 1-dimensional array
  - create lon, lat variables which are 2-dimensional arrays
  - the grid dataset uses XDim and YDim as dimensions and has an attribute "coordinates" = "lon lat"

see #5.2 Two-Dimensional Latitude, Longitude, Coordinate Variables
    http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.1/cf-conventions.html 

To implement this, control flow in H4toH5all_dimscale has been changed. Previously, grid dimensional scale was converted for each dimension like the following:

function H4toH5all_dimscale(dataset)
{
   for each dimension "dim" that "dataset" has {
      if ("dim" is HDF-EOS2 grid dimension such as "XDim" and "YDim")
         generate longitude or latitude by calling GDij2ll provided by HDF-EOS2
      else
         convert "dim" as it is
   }
}

The previous implementation assumes that each dimension is independent of another dimension, which is no longer true. To keep H4toH5all_dimscale simple, dimensional scales for an HDF-EOS2 grid is handled in H4toH5eosgrid_dimscale().

function H4toH5all_dimscale(dataset)
{
   if "dataset" has HDF-EOS2 grid dimensional scales
      call H4toH5eosgrid_dimscale()
      return
   ...
}


Additionally, unused code in h4toh5eos.c was removed.