WikiPage::makeParserOptions() to create the ParserOptions object and only
change options that affect the parser cache key.
* Article::viewRedirect() is deprecated.
+* IP::isValidBlock() was deprecated. Use the equivalent IP::isValidRange().
* DeprecatedGlobal no longer supports passing in a direct value, it requires a
callable factory function or a class name.
* The $parserMemc global, wfGetParserCacheStorage(), and ParserCache::singleton()