Count number of facts in a snapshot app
Merge pull request #53 from raronson/count_facts_app

Count number of facts in a snapshot app
Use role security.
Revert "Use role security."

This reverts commit 920a246c4addbbc3b2064ebe0f84354173b4e640.
Update scoobi version for cdh3/4
Add safeCopy to Fact
Moved compression settings to common lib
SnapshotMr.scala -> mr.scala
Add mr context object for keeping track of tmp and dist cache paths
Fixes from pull request

- Compress now only takes a job object and not a configuration
- MrContext is now a case class and all the lazy vals have been changed
- ThriftCache has one instance of serializer/deserializer instead of creating a new one per call to push/pop
Merge pull request #54 from raronson/russ_wip

Some of the ivory cleanup work
Increase heap for ci.
Add cdh4 ci script.
Be explicit about ci cdh version.
Preliminary notes on Ivory feature gen.
Created Committer for moving mr job output into final place
ProxyTaggedInputSplit.java -> ProxyTaggedInputSplit.scala
Removed lazy vals
Tooling to find path in mapper
Hdfs filterHidden combinator