Move CameraServer and WPILib headers into their own folder

The old headers were moved into folders because doing so avoids polluting
the system include directories.

Folder names were also normalized to lowercase.

hal/src/main/native/sim/mockdata/DigitalPWMDataInternal.h

@@ -0,0 +1,54 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2017-2018 FIRST. All Rights Reserved.                        */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include <atomic>
+#include <memory>
+
+#include <wpi/mutex.h>
+
+#include "mockdata/DigitalPWMData.h"
+#include "mockdata/NotifyListenerVector.h"
+
+namespace hal {
+class DigitalPWMData {
+ public:
+  int32_t RegisterInitializedCallback(HAL_NotifyCallback callback, void* param,
+                                      HAL_Bool initialNotify);
+  void CancelInitializedCallback(int32_t uid);
+  void InvokeInitializedCallback(HAL_Value value);
+  HAL_Bool GetInitialized();
+  void SetInitialized(HAL_Bool initialized);
+
+  int32_t RegisterDutyCycleCallback(HAL_NotifyCallback callback, void* param,
+                                    HAL_Bool initialNotify);
+  void CancelDutyCycleCallback(int32_t uid);
+  void InvokeDutyCycleCallback(HAL_Value value);
+  double GetDutyCycle();
+  void SetDutyCycle(double dutyCycle);
+
+  int32_t RegisterPinCallback(HAL_NotifyCallback callback, void* param,
+                              HAL_Bool initialNotify);
+  void CancelPinCallback(int32_t uid);
+  void InvokePinCallback(HAL_Value value);
+  int32_t GetPin();
+  void SetPin(int32_t pin);
+
+  virtual void ResetData();
+
+ private:
+  wpi::mutex m_registerMutex;
+  std::atomic<HAL_Bool> m_initialized{false};
+  std::shared_ptr<NotifyListenerVector> m_initializedCallbacks = nullptr;
+  std::atomic<double> m_dutyCycle{false};
+  std::shared_ptr<NotifyListenerVector> m_dutyCycleCallbacks = nullptr;
+  std::atomic<int32_t> m_pin{0};
+  std::shared_ptr<NotifyListenerVector> m_pinCallbacks = nullptr;
+};
+extern DigitalPWMData* SimDigitalPWMData;
+}  // namespace hal