Updated scripts for auditing releases

- Added script to automatically generate change list CHANGES.txt
- Added test for verifying linking against maven distributions of `spark-sql` and `spark-hive`
- Added SBT projects for testing functionality of `spark-sql` and `spark-hive`
- Fixed issues in existing tests that might have come up because of changes in Spark 1.0

Author: Tathagata Das <tathagata.das1565@gmail.com>

Closes #844 from tdas/update-dev-scripts and squashes the following commits:

25090ba [Tathagata Das] Added missing license
e2e20b3 [Tathagata Das] Updated tests for auditing releases.

1 files changed, 1 insertions, 0 deletions

diff --git a/dev/audit-release/maven_app_core/src/main/java/SimpleApp.java b/dev/audit-release/maven_app_core/src/main/java/SimpleApp.java
index 6b65dda39b..5217689e7c 100644
--- a/dev/audit-release/maven_app_core/src/main/java/SimpleApp.java
+++ b/dev/audit-release/maven_app_core/src/main/java/SimpleApp.java
@@ -37,5 +37,6 @@ public class SimpleApp {
      System.exit(-1);
    }
    System.out.println("Test succeeded");
+   sc.stop();
   }
 }