Fix Python package naming.

setup.py

@@ -90,8 +90,8 @@ setup(
     author="Stefano Cossu <https://git.knowledgetx.com/scossu>",
     url="https://git.knowledgetx.com/scossu/lsup_rdf",
     license="https://git.knowledgetx.com/scossu/lsup_rdf/src/master/LICENSE",
-    package_dir={"": "."},
-    packages=find_packages(where="."),
+    package_dir={"lsup_rdf": "cpython/lsup_rdf"},
+    packages=find_packages(where="cpython"),
     include_package_data=True,
     # cmdclass={"install": LSUPInstallCmd},
     classifiers=[