Merge "Introduce Special:RedirectExternal"

diff --combined autoload.php
index 3e6b4a2,22ddaf8..f8fc6b2
--- 1/autoload.php
--- 2/autoload.php
+++ b/autoload.php
@@@ -1396,6 -1396,7 +1396,7 @@@ $wgAutoloadLocalClasses = 
        'SpecialRecentChanges' => __DIR__ . '/includes/specials/SpecialRecentchanges.php',
        'SpecialRecentChangesLinked' => __DIR__ . '/includes/specials/SpecialRecentchangeslinked.php',
        'SpecialRedirect' => __DIR__ . '/includes/specials/SpecialRedirect.php',
+       'SpecialRedirectExternal' => __DIR__ . '/includes/specials/SpecialRedirectExternal.php',
        'SpecialRedirectToSpecial' => __DIR__ . '/includes/specialpage/RedirectSpecialPage.php',
        'SpecialRemoveCredentials' => __DIR__ . '/includes/specials/SpecialRemoveCredentials.php',
        'SpecialResetTokens' => __DIR__ . '/includes/specials/SpecialResetTokens.php',
@@@ -1536,6 -1537,7 +1537,6 @@@
        'UploadStashWrongOwnerException' => __DIR__ . '/includes/upload/UploadStash.php',
        'UploadStashZeroLengthFileException' => __DIR__ . '/includes/upload/UploadStash.php',
        'UppercaseCollation' => __DIR__ . '/includes/collation/UppercaseCollation.php',
 -      'UsageException' => __DIR__ . '/includes/api/UsageException.php',
        'User' => __DIR__ . '/includes/user/User.php',
        'UserArray' => __DIR__ . '/includes/user/UserArray.php',
        'UserArrayFromResult' => __DIR__ . '/includes/user/UserArrayFromResult.php',