Add Rhino for Android

Content of README.google:

Name: Rhino for Android
URL: https://github.com/APISENSE/rhino-android
Version: 1.1.1
Revision: N/A
Date: N/A
License: The GNU General Public License (GPL)

Description:
Give access to RhinoScriptEngine from the JSR223 interfaces on Android JRE.

Bug: 136633154
Change-Id: I554b4c76f67f2af47715349b0c2705687c5cd30e
diff --git a/build.gradle b/build.gradle
index eba96ce..9f8ba22 100644
--- a/build.gradle
+++ b/build.gradle
@@ -308,6 +308,7 @@
                 "junit",
                 "jdwp-tests",
                 "jsr223-api-1.0",
+                "rhino-android-1.1.1",
                 "kotlin",
                 "kotlin-compiler-1.3.41",
                 "openjdk/openjdk-rt-1.8",