Attached patch includes following changes:
1. codes in org.apache.sqoop.mapreduce are moved to org.apache.sqoop.mapreduce.postgresql,
2. settings for PGBulkloadManagerManualTest such as database, and username ,tablespace and path of pg_bulkload are made configurable via system property,
3. using not Configuration but JobConf in PGBulkloadManagerManualTest to follow changes in DBConfiguration,
4. handling for the case JdbcUrl.getPort returns -1 is added to PGBulkloadExportMapper.