Log Message:-----------When a TransitionError occurs, terminate the transaction.
Also, improve docstring and a raise error message.
Modified Files:-------------- pq/src: transam.py (r1.9 -> r1.10) (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/pq/src/transam.py.diff?r1=1.9&r2=1.10)
