Flatten nested queries. Need to test more
More tests for nesting subqueries
Expected output
Reformatted test to have more expressions/conds

this puts in line with the other tests in the same series and
asserts that we do more correctly
Merge branch 'master' into flatten-nested

Conflicts:
	fdb-sql-layer-core/src/test/resources/com/foundationdb/sql/optimizer/flatten/README.txt
merge ScottDugas: Flatten nested subqueries

Merge pull request #1586 from ScottDugas/sql-layer/flatten-nested
https://github.com/FoundationDB/sql-layer/pull/1586