Add a returns javadoc param to DatabaseMetaData.getRowIdLifetime
Due to the fact that we could not make changes to the RowSets spec, we had to align the ConflictingRow interface closer with SyncResolver and RowSets.

Also changed the DataSetResolver interface removing syncRow() and renamed the sync() method to resolveConflicts()

Minor changes to the SQLDataSetSyncException signature as well
Updated the javadocs for ResultSet, PreparedStatement, CallableStatement, Connection, Statement to indicate that calling methods on a closed object will throw a SQLException