Fixed PHP-859: MongoCollection::save() with options crashes.
Merged pull request #491
Merge branch 'v1.4'
Fixed PHP-763: Protos for Mongo and MongoClient
Merged Pull Request #489

* pull-request/489:
  Fixed PHP-763: Protos for Mongo and MongoClient
Fixed PHP-851: Add MONGO_HAVE_* constants and make sure MINFO contains this too