Stack trace on scalatest failures
Merge branch 'master' of github.com:amplab/shark into ampmaster
Add DictEncoding support for Int and Long. 32K uniques using Shorts for encoding
Updated sbt project setting for assembly target.
Add some misc. comments in TableScanOperator.
Merge branch 'master' of git://github.com/amplab/shark

Conflicts:
	src/main/scala/shark/execution/TableScanOperator.scala
Comments for MemoryMetadataManager::unpersist()
Update some misc comments for TableScanOperator/MetadataManager
Merge pull request #145 from harveyfeng/partition-caching

Some misc. comments in TableScanOperator and MemoryMetaDataManager
Merge branch 'master' of github.com:amplab/shark into ampmaster
Removed no-longer-needed repos
Capitalize CacheType enums
Some comments for CacheTypes and small refactoring.
Add a "shark.cache.type" flag in TBLPROPERTIES

This allows the user to pass a string representation of a supported cache type (heap, tachyon).

The flag addition also fixes a bug where passing 'shark.cache'='false' causes an InvalidCacheTypeException to be thrown.
Remove "shark.cache.type" property. Handle "shark.cache"="false".
Merge pull request #148 from harveyfeng/partition-caching

Add a new 'shark.cache.type' table property. Also included are a few comments and some small refactoring.
def hasNext is now part of the ColumnIterator interface.
Test iteration across column types for both RLE and Dict.
Test non-selection of compression algos.
Test and add Long Columns to RLE supported types.
override def hasNext
Merge pull request #147 from markhamstra/deadRepos

Removed no-longer-needed repos
Merge pull request #146 from junkumar/dictshort

Add DictEncoding support for Int and Long.