Don't use python as an interpreter for executables
Pass 'select' values through str to ensure the value is a string
In cheetah template, raise error properly through an exception
Whitespace
Refactor code to search for executable into utils module
With put_dataset, write destination directory into output pathset
Add ability to specify hadoop output dir through an environment variable
Add env variable to configure logging level

The variable has effect only for programs that configure their logging
through utils.config_logging