[Foundation-l] Merge wikis

[Alec Conroy]

> That discussion was interesting for this one, because it brings up issues
> such as that merging even a relatively small wiki like ten (565 content
> pages, 3,204 total pages) into Meta would probably take some considerable
> work.

We  need to lower barriers to cross-project collaboration.    A
SUL-linked userspace and crossproject transclusion will be a good
first start.    We ultimately want to be in a place where merges can
be done with only  trivial effort.