SERVER-8665 - don't use padding or power of 2 for capped collections
SERVER-8758 - remove dead code
SERVER-8757: reset index cache at beginning and end of background index creation
SERVER-8680 $setOnInsert should not create an empty parent object when it should be a no op
SERVER-6125 - moved jstest to correct location

Signed-off-by: Ian Whalen <ian.whalen@gmail.com>