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

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

wpilibj/src/main/java/edu/wpi/first/wpilibj/NamedSendable.java

@@ -0,0 +1,43 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2016-2017 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+package edu.wpi.first.wpilibj;
+
+import edu.wpi.first.wpilibj.smartdashboard.SendableBuilder;
+
+/**
+ * The interface for sendable objects that gives the sendable a default name in the Smart
+ * Dashboard.
+ * @deprecated Use Sendable directly instead
+ */
+@Deprecated
+public interface NamedSendable extends Sendable {
+
+  /**
+   * The name of the subtable.
+   *
+   * @return the name of the subtable of SmartDashboard that the Sendable object will use.
+   */
+  String getName();
+
+  @Override
+  default void setName(String name) {
+  }
+
+  @Override
+  default String getSubsystem() {
+    return "";
+  }
+
+  @Override
+  default void setSubsystem(String subsystem) {
+  }
+
+  @Override
+  default void initSendable(SendableBuilder builder) {
+  }
+}

wpilibj/src/main/java/edu/wpi/first/wpilibj/livewindow/LiveWindowSendable.java

@@ -0,0 +1,57 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2008-2017 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+package edu.wpi.first.wpilibj.livewindow;
+
+import edu.wpi.first.wpilibj.smartdashboard.SendableBuilder;
+import edu.wpi.first.wpilibj.Sendable;
+
+/**
+ * Live Window Sendable is a special type of object sendable to the live window.
+ * @deprecated Use Sendable directly instead
+ */
+@Deprecated
+public interface LiveWindowSendable extends Sendable {
+  /**
+   * Update the table for this sendable object with the latest values.
+   */
+  void updateTable();
+
+  /**
+   * Start having this sendable object automatically respond to value changes reflect the value on
+   * the table.
+   */
+  void startLiveWindowMode();
+
+  /**
+   * Stop having this sendable object automatically respond to value changes.
+   */
+  void stopLiveWindowMode();
+
+  @Override
+  default String getName() {
+    return "";
+  }
+
+  @Override
+  default void setName(String name) {
+  }
+
+  @Override
+  default String getSubsystem() {
+    return "";
+  }
+
+  @Override
+  default void setSubsystem(String subsystem) {
+  }
+
+  @Override
+  default void initSendable(SendableBuilder builder) {
+    builder.setUpdateTable(this::updateTable);
+  }
+}