Log Message:
Update wip/mongodb to 2.2.2

pkgsrc changes:
* Patch in support for boost>=1.50

Notable changes in 2.2.2
* Fix for upgrading replica set secondaries to 2.2.1 from a prior version
  of MongoDB
* Improved performance and reliability flushing to data files for Windows
  users on Azure
* The top command was recording commands as queries
* Add a top level option in replica sets to disable chaining

Notable changes in 2.2.1

* Fixed several batched oplog application issues required for db level
  locking
* Fixed authentication in mixed version environments