Set fair scheduler pool name only if the pool is defined.
Merge pull request #214 from rxin/fair

Set fair scheduler pool name only if the pool is defined.
Merge pull request #198 from amplab/tachyon

enable tachyon using 0.3.0 release
Tuples for SQL/Table 2 RDD convertors, with Python script to generate them
Changing back to not break API
Changing back to not break API
implicit conversion from RDD to RDDTable