nacl: homepage move

The homepage has moved. Also added a mirror, and fixed the quotation
marks.

If it’s possible to get bottles for this, even not-completely-optimal
bottles, despite the weird make process, that’d be useful given the
15-20 minute compile otherwise.

Closes #35276.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
nacl: add 20110221 bottle.