Add support for HD versions of the wiki logo in MonoBook-like skins.
Done using an array $wgLogoHD, which expects something like the following:
$wgLogoHD = array(
"1.5x" => "path/to/1.5x_version.png",
"2x" => "path/to/2x_version.png"
This is still horrible, but I dunno how to make it less horrible. Help.