Remove duplicate test file
Convert index stats JMX methods to system routines
Remove duplicate test coverage
Allow NULL for test dat files, insert as one transaction
Expose property
Convert histogram yaml to IT
Move loadDatabase to ApiTestBase
Move test files to subdirectories
Make test independent of other services
Add clear and test
Headers
merge nathanlws: Add index statistics helpers to system routines

Merge pull request #1304 from nathanlws/sql-layer/stats-sys-functions
https://github.com/FoundationDB/sql-layer/pull/1304