Respect textinputformat.record.delimiter conf setting in LzoLineRecordReader

This causes LzoTextInputFormat to follow the behavior of TextInputFormat as
shown in the below code

http://grepcode.com/file/repository.cloudera.com/content/repositories/releases/org.apache.hadoop/hadoop-mapreduce-client-core/2.0.0-cdh4.4.0/org/apache/hadoop/mapred/TextInputFormat.java#62