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.
Clone Spark into the spark folder for CI script (instead of incubator-spark).
Removed the extra runJob in cached table creation.
Merge pull request #178 from amplab/tachyon

Exclude more libs from tachyon
Add a SparkDDLTask for Shark-specific metastore operations.
Includes support for ALTER TABLE <old naem> RENAME TO <new name>.

Currently, this is meant to be a dependent task on Hive's DDLTask.
Unit test for ALTER TABLE RENAME TO on cached tables.