Modified control loops to run in bot3.

Change-Id: I5d9d461c8a10dc1c54fee69273809f76328df655
diff --git a/bot3/control_loops/update_polydrivetrain.sh b/bot3/control_loops/update_polydrivetrain.sh
old mode 100644
new mode 100755
index 37987d5..b1bb2b4
--- a/bot3/control_loops/update_polydrivetrain.sh
+++ b/bot3/control_loops/update_polydrivetrain.sh
@@ -4,6 +4,8 @@
 
 cd $(dirname $0)
 
+export PYTHONPATH=../../frc971/control_loops/python
+
 ./python/polydrivetrain.py drivetrain/polydrivetrain_dog_motor_plant.h \
     drivetrain/polydrivetrain_dog_motor_plant.cc \
     drivetrain/polydrivetrain_clutch_motor_plant.h \