In anticipation for proper HTTPS support on Wikimedia sites, we will
be enabling protocol relative URLs. This means that things like logos,
references to resources, and interwiki links will use links like:
//en.wikipedia.org/wiki/Main_Page
instead of links like:
http://en.wikipedia.org/wiki/Main_Page
Doing this ensures that we don't split our squid/varnish caches.
We'll enable this for
test.wikipedia.org some time before enabling it
globally, so that there will be at least a short time to test
beforehand.
- Ryan