Need to update the SWIG .i files for Swig 4.0

MacPorts has moved to Swig 4.0. The documentation macros are causing issues and making the OS X builds fail.

Output from a failed build on OS X. It dies on the .i file. From other errors it looks like it is the documentation macros/functions written.

[ 20%] Swig compile /Users/gitlab/builds/58c87fdd/0/jonathan-hanks/nds2-client/swig/python/module/nds_python.i for python
cd /Users/gitlab/builds/58c87fdd/0/jonathan-hanks/.build/swig-prefix/src/swig-build/python/python2 && /opt/local/bin/cmake -E make_directory /Users/gitlab/builds/58c87fdd/0/jonathan-hanks/.build/swig-prefix/src/swig-build/python/python2 /Users/gitlab/builds/58c87fdd/0/jonathan-hanks/.build/swig-prefix/src/swig-build/python/python2/CMakeFiles/_nds22.dir
cd /Users/gitlab/builds/58c87fdd/0/jonathan-hanks/.build/swig-prefix/src/swig-build/python/python2 && /opt/local/bin/cmake -E touch /Users/gitlab/builds/58c87fdd/0/jonathan-hanks/.build/swig-prefix/src/swig-build/python/python2/CMakeFiles/_nds22.dir/nds_pythonPYTHON.stamp
cd /Users/gitlab/builds/58c87fdd/0/jonathan-hanks/.build/swig-prefix/src/swig-build/python/python2 && /opt/local/bin/cmake -E env SWIG_LIB=/opt/local/share/swig/4.0.1 /opt/local/bin/swig -python -shadow -importall -Wall -threads -O -outdir /Users/gitlab/builds/58c87fdd/0/jonathan-hanks/.build/swig-prefix/src/swig-build/python/python2 -c++ -interface _nds2 -I/usr/include/python2.7 -I/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/core/include -I/Users/gitlab/builds/58c87fdd/0/jonathan-hanks/.build/swig-prefix/src/swig-build/src/client -I/Users/gitlab/builds/58c87fdd/0/jonathan-hanks/.build/swig-prefix/src/swig-build/common/module -I/Users/gitlab/builds/58c87fdd/0/jonathan-hanks/nds2-client/swig/common/module -I/Users/gitlab/builds/58c87fdd/0/jonathan-hanks/.build/swig-prefix/src/swig-build/python/module -I/Users/gitlab/builds/58c87fdd/0/jonathan-hanks/nds2-client/swig/python/module -I/Users/gitlab/builds/58c87fdd/0/jonathan-hanks/nds2-client/swig/python/python2 -o /Users/gitlab/builds/58c87fdd/0/jonathan-hanks/.build/swig-prefix/src/swig-build/python/python2/CMakeFiles/_nds22.dir/nds_pythonPYTHON_wrap.cxx /Users/gitlab/builds/58c87fdd/0/jonathan-hanks/nds2-client/swig/python/module/nds_python.i
/Users/gitlab/builds/58c87fdd/0/jonathan-hanks/nds2-client/swig/common/module/nds_channel.i:19: Error: Syntax error in input(1).