Removed commented out imports
Added multiple schema dump test
Added tests for cross schema grouping foreign keys
testHelper and more tests
fail if user dumps with cross schema gfk

cross schema grouping foreign keys don't work, and since you
probably shouldn't have them anyways, just throw an error.
minor whitespace cleanup
Made subfolders for resources per test class
merge ScottDugas: Prohibit dumping cross-schema grouping foreign keys

Merge pull request #85 from ScottDugas/sql-layer-client-tools/cross-schema-gfk
https://github.com/FoundationDB/sql-layer-client-tools/pull/85