Finish moving //y2014/... into its own namespace

Stuff didn't compile in the half-switched state it was in before.

Change-Id: I00ec3c79a2682982b12d4e8c8e682cb8625eb06d
diff --git a/y2014/control_loops/drivetrain/ssdrivetrain.h b/y2014/control_loops/drivetrain/ssdrivetrain.h
index 5945f96..1964ac5 100644
--- a/y2014/control_loops/drivetrain/ssdrivetrain.h
+++ b/y2014/control_loops/drivetrain/ssdrivetrain.h
@@ -63,7 +63,7 @@
   }
 
   void SendMotors(
-      ::frc971::control_loops::DrivetrainQueue::Output *output) const;
+      ::y2014::control_loops::DrivetrainQueue::Output *output) const;
 
   const LimitedDrivetrainLoop &loop() const { return *loop_; }