Merge "installer: Fix display of UPGRADE by disabling InterwikiLookup"

diff --combined autoload.php
index 7bbffc3,b489428..1adc5e4
--- 1/autoload.php
--- 2/autoload.php
+++ b/autoload.php
@@@ -889,7 -889,6 +889,7 @@@ $wgAutoloadLocalClasses = 
        'MediaWiki\\Auth\\Throttler' => __DIR__ . '/includes/auth/Throttler.php',
        'MediaWiki\\Auth\\UserDataAuthenticationRequest' => __DIR__ . '/includes/auth/UserDataAuthenticationRequest.php',
        'MediaWiki\\Auth\\UsernameAuthenticationRequest' => __DIR__ . '/includes/auth/UsernameAuthenticationRequest.php',
 +      'MediaWiki\\DB\\PatchFileLocation' => __DIR__ . '/includes/db/PatchFileLocation.php',
        'MediaWiki\\Diff\\ComplexityException' => __DIR__ . '/includes/diff/ComplexityException.php',
        'MediaWiki\\Diff\\WordAccumulator' => __DIR__ . '/includes/diff/WordAccumulator.php',
        'MediaWiki\\HeaderCallback' => __DIR__ . '/includes/HeaderCallback.php',
@@@ -897,6 -896,7 +897,7 @@@
        'MediaWiki\\Interwiki\\ClassicInterwikiLookup' => __DIR__ . '/includes/interwiki/ClassicInterwikiLookup.php',
        'MediaWiki\\Interwiki\\InterwikiLookup' => __DIR__ . '/includes/interwiki/InterwikiLookup.php',
        'MediaWiki\\Interwiki\\InterwikiLookupAdapter' => __DIR__ . '/includes/interwiki/InterwikiLookupAdapter.php',
+       'MediaWiki\\Interwiki\\NullInterwikiLookup' => __DIR__ . '/includes/interwiki/NullInterwikiLookup.php',
        'MediaWiki\\Languages\\Data\\CrhExceptions' => __DIR__ . '/languages/data/CrhExceptions.php',
        'MediaWiki\\Languages\\Data\\Names' => __DIR__ . '/languages/data/Names.php',
        'MediaWiki\\Languages\\Data\\ZhConversion' => __DIR__ . '/languages/data/ZhConversion.php',