Quick fixes for a couple small things checked in and installed.
Tomos' reported problem:
* broken caching with Internet Explorer (OutputPage::sendCacheControl())
vary: accept-encoding replaced with vary: user-agent to keep IE from
refusing to cache pages
Related problem I noticed while fixing that:
* compressed pages from the file cache were being resent every time
because IE tacked some size info on its response that broke the
timestamp comparison (OutputPage::checkLastModified())
Menchi's reported problem:
* missing language links on edit previews and special pages with
Nostalgia skin (SkinNostalgia::doBeforeContent())
-- brion vibber (brion @
pobox.com)