neo4j/neo4j — pull request #934 by tinwelint (2013-07-05 09:53:01+00:00)
Title: A couple of performance improvements

o Created and uses PrimitiveLongIterator for getPropertyKeys(). Should be
used for more as well.
o Use individual statement operation parts to remove the tiny
StatementOperations delegation at the top.
o TxState#hasChanges() is cheaper
o StateHandlingStatementOperations#getPropertyKeys and getProperty
just delegates if there's no tx changes.