* apps/NCL.env: clean

Signed-off-by: Yakkala Yagnesh Raghava <hi@yagnesh.org>
* build/NCL.sh: first try.

Signed-off-by: Yakkala Yagnesh Raghava <hi@yagnesh.org>
* build/HDF4.sh: clean up

Signed-off-by: Yakkala Yagnesh Raghava <hi@yagnesh.org>
* apps/NETCDF4.env: note about netcdf package

Signed-off-by: Yakkala Yagnesh Raghava <hi@yagnesh.org>