python - lo: Add a dictionary function.

Log Message:
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Add a dictionary function.

This simply takes the data provided by pg_config and puts it into a dictionary.

'instance' will probably throw deprecation warnings on the next release.

Modified Files:
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lo/postgresql/utility:
config.py (r1.4 -> r1.5)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/lo/postgresql/utility/config.py.diff?r1=1.4&r2=1.5)