Add support for secure pairing and input encryption to fix GFE 2.1 compatibility.

TODO:
Needs a LimelightCryptoProvider implementation for each platform to work.
Untested (and probably broken) on Android.
Needs more testing in general, especially in corner cases.

moonlight-common/.classpath

@@ -4,5 +4,6 @@
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
 	<classpathentry kind="lib" path="libs/xpp3-1.1.4c.jar"/>
 	<classpathentry kind="lib" path="libs/tinyrtsp.jar"/>
+	<classpathentry kind="lib" path="libs/commons-codec-1.9.jar"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>