Add USING as a valid start keyword for the browser shell
Browser: Merge the PERIODIC COMMIT keywords into one sequence
Merge pull request #2018 from boggle/master

Fixes for PERIODIC COMMIT
Add autocommit support to browser and in load csv
Extracted all profiler acceptance tests from ExecutionEngineTest and converted to using fun suite
Add test that verifies that PERIODIC COMMIT works with profile()
Update Documentation for PERIODIC COMMIT