Switches to the new build system (#87)

* Removes old build system

* Removes old gmock

* Adds new gmock

* Moves source files to new locations

* Adds new build system

src/main/native/cpp/UsbCameraBuffer.h

@@ -0,0 +1,58 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2016. 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#ifndef CS_USBCAMERABUFFER_H_
+#define CS_USBCAMERABUFFER_H_
+
+#ifdef __linux__
+#include <sys/mman.h>
+#endif
+
+namespace cs {
+
+class UsbCameraBuffer {
+ public:
+  UsbCameraBuffer() noexcept : m_data{nullptr}, m_length{0} {}
+  UsbCameraBuffer(UsbCameraBuffer&& other) noexcept : UsbCameraBuffer() {
+    swap(*this, other);
+  }
+  UsbCameraBuffer& operator=(UsbCameraBuffer&& other) noexcept {
+    swap(*this, other);
+    return *this;
+  }
+  UsbCameraBuffer(const UsbCameraBuffer&) = delete;
+  UsbCameraBuffer& operator=(const UsbCameraBuffer&) = delete;
+
+#ifdef __linux__
+  UsbCameraBuffer(int fd, size_t length, off_t offset) noexcept
+      : m_length{length} {
+    m_data =
+        mmap(nullptr, length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, offset);
+    if (m_data == MAP_FAILED) {
+      m_data = nullptr;
+      m_length = 0;
+    }
+  }
+
+  ~UsbCameraBuffer() {
+    if (m_data) munmap(m_data, m_length);
+  }
+#endif
+
+  friend void swap(UsbCameraBuffer& first, UsbCameraBuffer& second) noexcept {
+    using std::swap;
+    swap(first.m_data, second.m_data);
+    swap(first.m_length, second.m_length);
+  }
+
+  void* m_data;
+  size_t m_length;
+};
+
+}  // namespace cs
+
+#endif  // CS_USBCAMERABUFFER_H_