Adds match specific calls to Java and C++ (#720)

Uses caching, matching the joystick calls.

wpilibj/src/test/java/edu/wpi/first/wpilibj/hal/MatchInfoDataTest.java

@@ -0,0 +1,19 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 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.hal;
+
+import org.junit.Test;
+
+public class MatchInfoDataTest {
+  @Test
+  public void matchInfoDataDoesNotThrow() {
+    MatchInfoData data = new MatchInfoData();
+    HAL.getMatchInfo(data);
+    // Nothing we can assert, so just make sure it didn't throw.
+  }
+}