piros/tor: Code added to Tor to support PIR-based onion service descriptor lookups @ 657297a9f8bedfab2dadfaee53768a1f9b8a558e

Roger Dingledine 657297a9f8 Merge branch 'maint-0.3.0'		7 lat temu
..
.dummy	df76da0f3b Add a .dummy file in the changes directory to stop git from removing it	9 lat temu
bug1121	b80a35e683 Improve the message we log on unexpected dirauth status code	7 lat temu
bug22370	ec61ae59a5 Stop leaking keypin-rejected routerinfos on directory authorities	7 lat temu