python - be: Make setup.py import friendly.

Log Message:
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Make setup.py import friendly.
Also, make setup calculate installation directories at install time.
Tweak as necessary in ldistutils.

This allows 'be' to be configured and built prior to the installation of 'lo'.

Modified Files:
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be:
.cvsignore (r1.1.1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/.cvsignore.diff?r1=1.1.1.1&r2=1.2)
setup.py (r1.6 -> r1.7)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/setup.py.diff?r1=1.6&r2=1.7)
be/lib:
ldistutils.py (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/lib/ldistutils.py.diff?r1=1.3&r2=1.4)