SERVER-9385 Make sure _id fields are extracted from modified lazy V8 objects
slight clarification in README and in addition made it windows-friendly by using CRLF everywhere. (it had them 75% already so seemed logical to just carry them through)
SERVER-8589 Fixed race in range_deleter_test

Made sure to increment the counter after the event happened, not before.
SERVER-9394
optimize secondaries to not create excessive load on the primary under certain scenarios
Merge branch 'master' of github.com:mongodb/mongo
SERVER-8598 Add command to cleanup orphaned data created by failed chunk migrations

Added a way to pass index specs for deletion.
SERVER-9072 Expose the full object when logging an update.
SERVER-9396
otherLock cache variable was not working - fixed
Merge branch 'master' of github.com:mongodb/mongo