Updated HDF and HDF-EOS download locations.
Added .gitignore files for empty directories to source.
Changed netcdf defines to use HDF specific versions.
Fixed library ordering in applications Makefile.
Silenced missing .d files in Makefile.
1.4.4-internal (April 21, 2016)
Added support for interim verison of AS_AEROSOL and AS_LAND netCDF4 products.