piros/tor: Code added to Tor to support PIR-based onion service descriptor lookups @ edc9256e95e307092d57cf273ac699f33cb0192b

Nick Mathewson edc9256e95 Merge remote branch 'public/win_unicode_fixes'		15 lat temu
..
bug1843	219f7415d1 Warn for bad combination of cookie options	16 lat temu
bug1848	2af6aadfe9 Fix a compile warning on OpenBSD	16 lat temu
log-ratelim	ba9c1275c4 Add a generic rate-limited log mechanism, and use it in a few places	16 lat temu
openbsd-sysheaders	30b766ba12 Use -Wno-system-headers on openbsd to resolve 2nd case of bug1848	16 lat temu
win32_unicode	c0c7868250 Make the windows build succeed with or without -DUNICODE enabled.	16 lat temu