Add a project status page ala C99 and similar for FreeBSD/MIPS, to make it
easier for people to track the status.

Add a developers.sgml entry for Justin Wojdacki for use in the status page.

Reviewed by: ceri

Add an entry for MIPS on the platforms page, and a small page there with
a few tiny bits of information, mostly mailing list info and a link to
the afforementioned status page.

Requested by: ceri