cleaned up lots of logging

There were many LOGs that made more sense as LOG_STRUCTs to save space,
reduce CPU usage, and make it a bit more obvious what they're saying.
diff --git a/frc971/control_loops/claw/claw.q b/frc971/control_loops/claw/claw.q
index 38e7efb..3225d2f 100644
--- a/frc971/control_loops/claw/claw.q
+++ b/frc971/control_loops/claw/claw.q
@@ -73,3 +73,14 @@
 };
 
 queue_group ClawGroup claw_queue_group;
+
+struct ClawPositionToLog {
+	double top;
+	double bottom;
+};
+
+struct ClawGoalToLog {
+	double bottom_pos;
+	double bottom_vel;
+	double separation;
+};