Reverting r41410 -- broke interwikis totally in parser tests.

Reverting r41410 -- broke interwikis totally in parser tests.

   4 previously passing test(s) now FAILING! :(
      * Inline interwiki link  [Introduced between 30-Sep-2008 00:18:19, 1.14alpha (r41405) and 01-Oct-2008 16:31:38, 1.14alpha (r41504)]
      * Inline interwiki link with empty title (bug 2372)  [Introduced between 30-Sep-2008 00:18:19, 1.14alpha (r41405) and 01-Oct-2008 16:31:38, 1.14alpha (r41504)]
      * Interwiki link encoding conversion (bug 1636)  [Introduced between 30-Sep-2008 00:18:19, 1.14alpha (r41405) and 01-Oct-2008 16:31:38, 1.14alpha (r41504)]
      * Interwiki link with fragment (bug 2130)  [Introduced between 30-Sep-2008 00:18:19, 1.14alpha (r41405) and 01-Oct-2008 16:31:38, 1.14alpha (r41504)]