piros/tor: Code added to Tor to support PIR-based onion service descriptor lookups @ e9ecb09786763a65838b9760e5d14dd3b4956b25

Nick Mathewson 6230dfaf14 Merge branch 'maint-0.3.3'		%!s(int64=6) %!d(string=hai) anos
..
.dummy	df76da0f3b Add a .dummy file in the changes directory to stop git from removing it	%!s(int64=9) %!d(string=hai) anos
bug26272	8366be3b51 Silence unused-const-variable warnings in zstd.h on some gcc versions	%!s(int64=6) %!d(string=hai) anos
bug26283	9876575d2c Silence -Wbad-function-cast warning (when DEBUG_SMARTLIST is on)	%!s(int64=6) %!d(string=hai) anos
geoip-2018-06-07	ae540569ce Update geoip and geoip6 to the June 7 2018 database.	%!s(int64=6) %!d(string=hai) anos