External Libraries: Update Random_Compat from 1.2.1 to 2.0.11.

Notably this fixes PHP7 parse errors of the files and removes the OpenSSL functionality.
Full Changes: https://github.com/paragonie/random_compat/compare/v1.2.1...v2.0.11

Props jrdelarosa.
See #42439.


git-svn-id: https://develop.svn.wordpress.org/trunk@42130 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/random_compat/error_polyfill.php

@@ -4,8 +4,8 @@
  * for using the new PHP 7 random_* API in PHP 5 projects
  * 
  * The MIT License (MIT)
- * 
- * Copyright (c) 2015 Paragon Initiative Enterprises
+ *
+ * Copyright (c) 2015 - 2017 Paragon Initiative Enterprises
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -35,8 +35,15 @@ if (!class_exists('Error', false)) {
 }
 
 if (!class_exists('TypeError', false)) {
-    class TypeError extends Error
-    {
-        
+    if (is_subclass_of('Error', 'Exception')) {
+        class TypeError extends Error
+        {
+            
+        }
+    } else {
+        class TypeError extends Exception
+        {
+            
+        }
     }
 }