gnu: netcdf: Upgrade to 4.4.1.1.

* gnu/packages/maths.scm (netcdf, netcdf-parallel-openmpi): Upgrade to
4.4.1.1.
[source]: Adjust patch name, add netcdf-tst_h_par.patch
* gnu/packages/patches/netcdf-config.date.patch: Rename to...
* gnu/packages/patches/netcdf-date-time.patch: ...this.  Adjust for
latest source.
* gnu/packages/patches/netcdf-tst_h_par.patch: New patch.
* gnu/local.mk (dist_patch_DATA): Adjust patches.