GNU GPL license in some of the source files

I just downloaded the source for 2.5.3 (http://initd.org/psycopg/tarballs/PSYCOPG-2-5/psycopg2-2.5.3.tar.gz) and looked through the sources. The following files seem to be under a GPL license:

examples/copy_from.py

examples/lobject.py

examples/copy_to.py

scripts/buildtypes.py

scripts/make_errorcodes.py

scripts/refcounter.py

And there's a copy of the GNU GPL:

doc/COPYING

We're very sensitive to GPL code here and would appreciate some clarification about these files. Was this just an oversight? And is there a plan to provide a source release without GPL code in the package?

Thanks,

-Chris