Took log4j init out of SharkContext.
Merge pull request #167 from rxin/logging

Took log4j init out of SharkContext.
A smarter execution strategy for limit.
Fixed a bug in numPartsToTry calculation.
Overestimate by 50%.
Merge pull request #171 from rxin/limit2

A smarter execution strategy for limit.
Do not init spark context when in remote mode
SHARK-193: reducing Shark's logging verbosity
SHARK-183: implementing BooleanBitSetCompression
Merge pull request #173 from AndreSchumacher/info_to_debug

SHARK-193: reducing Shark's logging verbosity
Merge pull request #174 from colorant/shark-server

Do not init spark context when in remote mode
Merge pull request #172 from AndreSchumacher/boolean_bitset_compression

SHARK-183: implementing BooleanBitSetCompression
Bug fix in Pruning between clauses. When the second evaluator is a function, we should not throw an exception

Conflicts:
	src/test/scala/shark/SQLSuite.scala
Merge branch 'master' of github.com:amplab/shark
Moved the test for partition pruning into the appropriate block.
Merge pull request #176 from rxin/partitionbug

Bug fix in partition/map pruning for between clauses.
exclude jetty from tachyon
exclude curator from tachyon
merge master
Moved Spark's repository to its ASF github mirror.