Address Sarina's comments from the PR

-Clean up `SUFFIXES` from interspersed commented-out suffixes
-Remove unused `LOG`
-Remove unused method `raiseself` of UndefinedVariable and its usage
Undo change to jenkins/test.sh in anticipation of merge

Original change: SHA 58e98d
This was resolved by merging in Cale's branch
  https://github.com/edx/edx-platform/pull/44