Row set mapper fixed
Merge remote-tracking branch 'origin/master'

* origin/master:
  Added the datatypes scrips to the list.
  Additional null check
  Added a missing a commit in sql.
  Normalize null values for easy comparison across mysql versions.
  Additional changes for travis test failure.
  Additional changes for travis test failure.
  Travis errored on timestamp.
  Changes for testing against Mysql 5.1
  Added dataset creation script.
  Mysql data types expanded.
  Changed permissions
  Additional changes as per review comments.
  Incorporated review comments.