nds2-client-swig-0.16.2 should require nds2-client-0.16.1

The conda-forge build for nds2-client-swig-0.16.2 is failing with the following error:

[ 40%] Building CXX object python/python2/CMakeFiles/_nds22.dir/CMakeFiles/_nds22.dir/nds_pythonPYTHON_wrap.cxx.o
In file included from /home/conda/feedstock_root/build_artifacts/nds2-client-swig_1540249542749/work/build/python/python2/CMakeFiles/_nds22.dir/nds_pythonPYTHON_wrap.cxx:31:0:
/home/conda/feedstock_root/build_artifacts/nds2-client-swig_1540249542749/work/common/module/nds_swig.hh:15:29: fatal error: nds_standalone.hh: No such file or directory
 #include "nds_standalone.hh"
                             ^

I think this is because the new version of nds2-client-swig depends on the new version of nds2-client, but isn't declaring that dependency properly. The spec file in the tarball shows:

BuildRequires:  nds2-client-devel >= 0.15.3

The debian/control file shows something different:

libnds2-client (>= 0.16.0)

I think each of those should be references to >= 0.16.1.