Made some changes to JoystickReader for third robot.

Changes are by no means finalized!

- Copied input stuff to bot3/input.
(Copying even unmodified files was necessary so git wouldn't build stuff
from frc971/input/input.gyp and see duplicate targets.)
- Modified build system to build this.
- Took the opportunity to fix some name-related stylguide compliance issues.
(I fixed these in frc971 as well.)
diff --git a/bot3/input/gyro_board_data.h b/bot3/input/gyro_board_data.h
new file mode 100644
index 0000000..10135e3
--- /dev/null
+++ b/bot3/input/gyro_board_data.h
@@ -0,0 +1,75 @@
+#ifndef FRC971_INPUT_GYRO_BOARD_DATA_H_
+#define FRC971_INPUT_GYRO_BOARD_DATA_H_
+
+#include "aos/common/byteorder.h"
+
+namespace frc971 {
+
+// The struct that the gyro board sends out with all of the data in it.
+struct GyroBoardData {
+	int64_t gyro_angle;
+
+	int32_t left_drive;
+	int32_t right_drive;
+	int32_t shooter_angle;
+	int32_t shooter;
+	int32_t indexer;
+	int32_t wrist;
+
+	int32_t capture_top_rise;
+	int32_t capture_top_fall;
+	int32_t capture_bottom_fall_delay;
+	int32_t capture_wrist_rise;
+	int32_t capture_shooter_angle_rise;
+
+	uint8_t top_rise_count;
+
+	uint8_t top_fall_count;
+
+	uint8_t bottom_rise_count;
+
+	uint8_t bottom_fall_delay_count;
+	uint8_t bottom_fall_count;
+
+	uint8_t wrist_rise_count;
+
+	uint8_t shooter_angle_rise_count;
+
+  union {
+    struct {
+      uint8_t wrist_hall_effect : 1;
+      uint8_t angle_adjust_bottom_hall_effect : 1;
+      uint8_t top_disc : 1;
+      uint8_t bottom_disc : 1;
+    };
+    uint32_t digitals;
+  };
+
+  void NetworkToHost() {
+    // Apparently it sends the information out in little endian.
+#if 0
+    using ::aos::ntoh;
+
+    gyro_angle = ntoh(gyro_angle);
+
+    right_drive = ntoh(right_drive);
+    left_drive = ntoh(left_drive);
+    shooter_angle = ntoh(shooter_angle);
+    shooter = ntoh(shooter);
+    indexer = ntoh(indexer);
+    wrist = ntoh(wrist);
+
+    capture_top_rise = ntoh(capture_top_rise);
+    capture_top_fall = ntoh(capture_top_fall);
+    capture_bottom_fall_delay = ntoh(capture_bottom_fall_delay);
+    capture_wrist_rise = ntoh(capture_wrist_rise);
+    capture_shooter_angle_rise = ntoh(capture_shooter_angle_rise);
+
+    digitals = ntoh(digitals);
+#endif
+  }
+} __attribute__((__packed__));
+
+}  // namespace frc971
+
+#endif  // FRC971_INPUT_GYRO_BOARD_DATA_H_