Log Message:
-----------
Fix depth reduction in exceptions.
Also, don't delete those attributes as they are no longer there.
Modified Files:
--------------
be/src:
pl.c (r1.30 -> r1.31)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/src/pl.c.diff?r1=1.30&r2=1.31)