SERVER-7958 - when an old operation has a writeback,
              make sure not to use that info in the user writeback
              just block
bad merge - fix compile
SERVER-7971 - do not need to do 2 lookups when doing an upsert on _id
SERVER-7769 - fast bson validate
clean up geo parsing a bit
SERVER-4706 when a socket between mongos and mongod fails, close all connections immediately

Additional fix for query/insert.
SERVER-5848 determine index suitability using a FieldRangeSet

Previously each special index type would determine the suitability
of the index by analyzing the original query.  To avoid re-parsing
the query for each index, we now pass in a FieldRangeSet, which is
a better representation of all the constraints implied by the query.
SERVER-7451 - fix disk full test error checking
SERVER-5848 Disable tests temporarily (fix compile).
SERVER-939 Changed ChunkFields to ChunkType
Clean up headers in files that will be changed in move to chunk types
SERVER-939 Changed ShardFields to ShardType
SERVER-939 Changed CollectionFields to CollectionType
SERVER-939 Added type class for documents in config.mongos collection
SERVER-939 Changed DatabaseFields to DatabaseType
SERVER-939 Added type class for documents in config.settings collection
SERVER-939 Changed SettingsFields to SettingsType
SERVER-939 Added type class for documents in config.locks collection
SERVER-939 Changed LockFields to LocksType
SERVER-939 Added type class for documents in config.tags collection