python - be: Rewrite tests as unit tests.

Log Message:
-----------
Rewrite tests as unit tests.

While still a bit primitive, these replace all the comparison tests. Currently,
a few false failures occur due to shortcomings in Proboscis(notably, composite
types), but it is complete enough to provide useful information.

Added Files:
-----------
    be/test:
        test_error.py (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/test_error.py?rev=1.1&content-type=text/x-cvsweb-markup)
        test_io.py (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/test_io.py?rev=1.1&content-type=text/x-cvsweb-markup)
        test_srf.py (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/test_srf.py?rev=1.1&content-type=text/x-cvsweb-markup)
        test_trigger.py (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/test_trigger.py?rev=1.1&content-type=text/x-cvsweb-markup)

Removed Files:
-------------
    be/test:
        regress.py
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/regress.py)
    be/test/expected/80:
        fund
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/expected/80/fund)
        generator
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/expected/80/generator)
        srf
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/expected/80/srf)
        trigger
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/expected/80/trigger)
    be/test/expected/81:
        fund
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/expected/81/fund)
        generator
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/expected/81/generator)
        srf
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/expected/81/srf)
        trigger
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/expected/81/trigger)
    be/test/sql/80:
        fund
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/sql/80/fund)
        generator
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/sql/80/generator)
        srf
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/sql/80/srf)
        trigger
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/sql/80/trigger)
    be/test/sql/81:
        fund
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/sql/81/fund)
        generator
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/sql/81/generator)
        srf
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/sql/81/srf)
        trigger
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/test/sql/81/trigger)