[Neo] first test

[Mattias Persson]

>> I think the limitation is more related to the size of the transaction.
>> Less transactions = faster inserts = more memory
>> Just a guess though, not sure what your code looks like.
>> We have been able to import millions of nodes with small heaps committing
>> in
>> small batches.

Yep, that's probably the problem... look at
http://wiki.neo4j.org/content/Transactions#Big_transactions for more
information about that.