exclude jetty from tachyon
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merge master
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.
Fix merge mistake in SharkDDLSemanticAnalyzer.
Merge branch 'spark-ddl-task' into partition-caching

Conflicts:
	src/main/scala/shark/SharkDriver.scala
	src/main/scala/shark/execution/SparkDDLTask.scala
	src/main/scala/shark/parse/SharkDDLSemanticAnalyzer.scala
	src/test/scala/shark/SQLSuite.scala
Get merges to compile.