Automatically generate the drivetrain constants.

Change-Id: Ib96f7d55734d44d8ac9d918ec90edf3b1fb46cd3
diff --git a/y2014/constants.cc b/y2014/constants.cc
index 21ebb59..6e5e293 100644
--- a/y2014/constants.cc
+++ b/y2014/constants.cc
@@ -65,7 +65,7 @@
           false,
           0.5,
           control_loops::MakeVelocityDrivetrainLoop,
-          control_loops::MakeDrivetrainLoop,
+          ::y2014::control_loops::drivetrain::MakeDrivetrainLoop,
           0.02, // drivetrain done delta
           5.0, // drivetrain max speed
 
@@ -103,7 +103,7 @@
           false,
           kRobotWidth,
           control_loops::MakeVelocityDrivetrainLoop,
-          control_loops::MakeDrivetrainLoop,
+          ::y2014::control_loops::drivetrain::MakeDrivetrainLoop,
           0.02, // drivetrain done delta
           5.0, // drivetrain max speed
 
@@ -150,7 +150,7 @@
           false,
           kRobotWidth,
           control_loops::MakeVelocityDrivetrainLoop,
-          control_loops::MakeDrivetrainLoop,
+          ::y2014::control_loops::drivetrain::MakeDrivetrainLoop,
           0.02, // drivetrain done delta
           5.0, // drivetrain max speed