Created the initial, C-only version of Nemesis, which will be for
people who prefer to extend Python using *.so files, instead of
embedding everything in one, big executable.
Added svn:externals.
Added 'setup.py' to the distribution.
Added 'archimedes' to the distribution.
Use the new CIT_PYTHON_CONFIG instead of CIT_PYTHON_SYSCONFIG.  See
Issue39.
Call CIT_CHECK_PYTHON_HEADER and CIT_CHECK_PYTHON_SHARED.
Bumped version.