Add deprecated shims for LiveWindowSendable and NamedSendable. (#834)

This will help prevent old code from breaking (not all cases, but should help).

wpilibc/src/main/native/include/LiveWindow/LiveWindowSendable.h

@@ -0,0 +1,48 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2012-2017 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 <string>
+
+#include <support/deprecated.h>
+
+#include "SmartDashboard/Sendable.h"
+
+namespace frc {
+
+/**
+ * Live Window Sendable is a special type of object sendable to the live window.
+ * @deprecated Use Sendable directly instead
+ */
+class WPI_DEPRECATED("use Sendable directly instead") LiveWindowSendable
+    : public Sendable {
+ public:
+  /**
+   * Update the table for this sendable object with the latest values.
+   */
+  virtual void UpdateTable() = 0;
+
+  /**
+   * Start having this sendable object automatically respond to value changes
+   * reflect the value on the table.
+   */
+  virtual void StartLiveWindowMode() = 0;
+
+  /**
+   * Stop having this sendable object automatically respond to value changes.
+   */
+  virtual void StopLiveWindowMode() = 0;
+
+  std::string GetName() const override;
+  void SetName(const llvm::Twine& name) override;
+  std::string GetSubsystem() const override;
+  void SetSubsystem(const llvm::Twine& subsystem) override;
+  void InitSendable(SendableBuilder& builder) override;
+};
+
+}  // namespace frc