Update to 2018_v4 image and new build system. (#598)

* Revert "Force OpenCV to 3.1.0 (#602)"

This reverts commit 50ed55e8e2.

* Removes Simulation

* Removes old build system

* Removes old gtest

* Adds new gmock and gtest

* Updates to new ni-libraries

* removes MyRobot (to be replaced)

* moves files to new location

* Adds new sim backend and new test executables

* updates .styleguide and .gitignore

* Changes cpp WPILibVersion to a function

MSVC throws an AV with the old version.

* Disables USBCamera on all systems except for linux

* 2018 NI Libraries

* New build system

wpilibcIntegrationTests/src/FRCUserProgram/headers/command/MockCommand.h

@@ -0,0 +1,46 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2016-2017. 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 "Commands/Command.h"
+
+namespace frc {
+
+class MockCommand : public Command {
+ public:
+  MockCommand();
+  int32_t GetInitializeCount() { return m_initializeCount; }
+  bool HasInitialized();
+
+  int32_t GetExecuteCount() { return m_executeCount; }
+  int32_t GetIsFinishedCount() { return m_isFinishedCount; }
+  bool IsHasFinished() { return m_hasFinished; }
+  void SetHasFinished(bool hasFinished) { m_hasFinished = hasFinished; }
+  int32_t GetEndCount() { return m_endCount; }
+  bool HasEnd();
+
+  int32_t GetInterruptedCount() { return m_interruptedCount; }
+  bool HasInterrupted();
+
+ protected:
+  void Initialize() override;
+  void Execute() override;
+  bool IsFinished() override;
+  void End() override;
+  void Interrupted() override;
+
+ private:
+  int32_t m_initializeCount;
+  int32_t m_executeCount;
+  int32_t m_isFinishedCount;
+  bool m_hasFinished;
+  int32_t m_endCount;
+  int32_t m_interruptedCount;
+};
+
+}  // namespace frc