Bugfix

I just fixed a regression in Apache that invalidated not only the project documentation, but also my long-standing tutorial on reverse proxying.

I don’t know how long it’s been broken: in fact I’ve no certain recollection of testing any 2.2.x version.  But it appears to be connected with the introduction of the proxy balancer, leaving some code ‘orphaned’ for proxies not using the balancer.

Oops!  Guess I should check the cookie stuff for anything similar!