Victory is mine!  SWIG construction of a python interface is working.  Had to do a bit of
C stuff manually to translate between int** for the configuration, which was easy to do with
SWIG typemaps, and the int[] of the underlying slatkin code.

Make file contains targets for "make python" and "make pyinstall" which runs the underlying
distutils setup.py script in the right order.  Just doing "python setup.py build" FIRST tries
to copy the slatkin.py wrapper module (and fails) because SWIG isn't run until the build_ext
phase.  So the Makefile runs SWIG first, then distutils, which now succeeds.