Changes in Log Structure and Test script fixes
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#	modified:   README.pod
#	modified:   lib/DBIx/Class/PgLog.pm
#	modified:   lib/DBIx/Class/Schema/PgLog/Structure.pm
#	modified:   lib/DBIx/Class/Schema/PgLog/Structure/Log.pm
#	modified:   lib/DBIx/Class/Schema/PgLog/Structure/LogSet.pm
#	modified:   t/log_schema.pl
#	modified:   t/pg_log_test.sql
#
