Added ability to overwrite file format by setting FORMAT environment variable.
e.g. FORMAT=textfile ./tpcds-setup.sh ....
Many people are not using ATS, causing the testbench.settings files to fail.

Split the settings to use no ATS (default) or with ATS. ATS allows you to get additional analytics about your jobs.
Updated instructions and caveats.
Split into with ATS and without ATS settings.
Formatting improvements for samples.
Update DDLs for TPC-H for scale & fix nation/region table gen
enable sort partitioned ETL
Merge pull request #13 from t3rmin4t0r/master

Update DDLs for TPC-H for scale & fix nation/region table gen