Depends on I468d4eb4 in core.
Uses various hacks to trick the test runner into thinking
an MW target is in use, when in fact we still use SA targets.
Change-Id: If4611307d5d7aaee4af84f86ef82faf9078043b6
* Add ve.init.mw.LinkCache to track page existence and
transparently query it
* Populate it with initial data from the parser cache
if available, obtained in the VE API module
* Use linkCache data in link annotation rendering
This doesn't yet integrate the LinkCache with other
components like the link inspector. That should be
done so we can deduplicate the existence checks.
Additionally, we should generalize LinkCache and use
it for the category existence/status checks as well.
Bug: 37901
Change-Id: I9fd43e8c3864dd375cf6dadfdeedd05e4fe9cf3b