PHP-998: Add max batch and message size to connection info
Merge pull request #594
Test MongoInsertBatch split during replica set failover
Merge pull request #595
Only run MongoInsertBatch failover test on server 2.5.5+
Merge pull request #596
Include replicaset script in replicaset-failover

This ensures that functionality such as server version checking is handled properly.
Merge pull request #597
PHP-993: Merge return array of individual batches into one array
Fix zts build
Attempt#2 to modify the batch statistics according to the spec
Simplify free()ing logic
New test