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/IterativeRobot.h

@@ -1,37 +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 "IterativeRobotBase.h"
-
-namespace frc {
-
-/**
- * IterativeRobot implements the IterativeRobotBase robot program framework.
- *
- * The IterativeRobot class is intended to be subclassed by a user creating a
- * robot program.
- *
- * Periodic() functions from the base class are called each time a new packet is
- * received from the driver station.
- */
-class IterativeRobot : public IterativeRobotBase {
- public:
-  IterativeRobot();
-  virtual ~IterativeRobot() = default;
-
-  /**
-   * Provide an alternate "main loop" via StartCompetition().
-   *
-   * This specific StartCompetition() implements "main loop" behaviour synced
-   * with the DS packets.
-   */
-  void StartCompetition() override;
-};
-
-}  // namespace frc