Comment 4 for bug 1648234

The Apache 2.2 configuration doesn't work, as 2.2 doesn't set REQUEST_SCHEME. I've pushed an update to the branch user/gmcharlt/lp1648234.

Given that and the fact that the JSPAC URL redirects either should be changed or dropped, I'm moving the target to 2.10.1 to allow more time for baking. We can direct people to this bug if they're in a hurry to implement that kind of proxy in 2.12.0.