Automatically generate claw constants.

Change-Id: I35d15b34e6ae8349b009cd636d5e3962f1c6af5c
diff --git a/y2014/control_loops/claw/claw.cc b/y2014/control_loops/claw/claw.cc
index 7322b1e..1c93cf5 100644
--- a/y2014/control_loops/claw/claw.cc
+++ b/y2014/control_loops/claw/claw.cc
@@ -372,7 +372,7 @@
       has_bottom_claw_goal_(false),
       bottom_claw_goal_(0.0),
       bottom_claw_(this),
-      claw_(MakeClawLoop()),
+      claw_(::y2014::control_loops::claw::MakeClawLoop()),
       was_enabled_(false),
       doing_calibration_fine_tune_(false),
       capped_goal_(false),