SERVER-12985 fix display index name

Signed-off-by: Matt Kangas <matt.kangas@mongodb.com>
SERVER-12529 fix explain output for nscannedObjects on $or

Signed-off-by: Matt Kangas <matt.kangas@mongodb.com>
SERVER-12950 don't mark writes as completed after errors in ordered batch
SERVER-12127 migrate js tests to jscore suite when not related to writes

Migrate js tests starting from j-z.
Include SERVER-12920 Update use_power_of_2.js

Signed-off-by: Matt Kangas <matt.kangas@mongodb.com>
SERVER-12127 Temporarily put back jstest in order not to lose test coverage.

Signed-off-by: Matt Kangas <matt.kangas@mongodb.com>
SERVER-12572 Informatively fail attempts to build C++ client driver targets

The MongoDB C++ client driver now resides in a separate repo and is maintained
independently of the server. The targets in this repo that used to build or test
the driver will now print an error message explaining the change and referring
users to the relevant documentation.
SERVER-12993: drop db in test until fixed
dropdb_race.js: switch to use fsync instead of j writeConcern
SERVER-12262 re-enable test for negation of in query