Increases how robust the skewJoin test is
Man, the skewjoin tests were pretty broken, but still the code can't find an error
Fix for ScanTest to run it against hadoop 2.0.

Without secondary sort, there is no guaranteed order of grouped touples. This change makes it deterministic.
Build changes that enable scalding on hadoop 2.0.
Revert "Build changes that enable scalding on hadoop 2.0."

This reverts commit 4bea612061933c2fa8b74f78f9034bcbe0c8eb86.
Add ability to control cascading version with env variable
Merge pull request #362 from twitter/feature/help-old-man-wensel

Add ability to control cascading version with env variable
Merge pull request #361 from sjlee/sjlee_hadoop_2.0

Fix for ScanTest to run it against hadoop 2.0.
Merge pull request #360 from twitter/feature/skewTests

Increases how robust the skewJoin test is