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.

wpilibc/src/main/native/include/PWMSpeedController.h

@@ -1,67 +0,0 @@
-/*----------------------------------------------------------------------------*/
-/* Copyright (c) 2008-2018 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 "SafePWM.h"
-#include "SpeedController.h"
-
-namespace frc {
-
-/**
- * Common base class for all PWM Speed Controllers.
- */
-class PWMSpeedController : public SafePWM, public SpeedController {
- public:
-  /**
-   * Set the PWM value.
-   *
-   * The PWM value is set using a range of -1.0 to 1.0, appropriately scaling
-   * the value for the FPGA.
-   *
-   * @param speed The speed value between -1.0 and 1.0 to set.
-   */
-  void Set(double value) override;
-
-  /**
-   * Get the recently set value of the PWM.
-   *
-   * @return The most recently set value for the PWM between -1.0 and 1.0.
-   */
-  double Get() const override;
-
-  void SetInverted(bool isInverted) override;
-
-  bool GetInverted() const override;
-
-  void Disable() override;
-
-  void StopMotor() override;
-
-  /**
-   * Write out the PID value as seen in the PIDOutput base object.
-   *
-   * @param output Write out the PWM value as was found in the PIDController
-   */
-  void PIDWrite(double output) override;
-
- protected:
-  /**
-   * Constructor for a PWM Speed Controller connected via PWM.
-   *
-   * @param channel The PWM channel that the controller is attached to. 0-9 are
-   *                on-board, 10-19 are on the MXP port
-   */
-  explicit PWMSpeedController(int channel);
-
-  void InitSendable(SendableBuilder& builder) override;
-
- private:
-  bool m_isInverted = false;
-};
-
-}  // namespace frc