piros/tor: Code added to Tor to support PIR-based onion service descriptor lookups @ 64f62881d8578ebf98d35d2731f7e6b51a565a09

Nick Mathewson 64f62881d8 New --enable-expensive-hardening option		%!s(int64=11) %!d(string=hai) anos
..
bug10431	b0bbe6b2f1 Report only the first bootstrap failure from an orconn	%!s(int64=11) %!d(string=hai) anos
bug11477	64f62881d8 New --enable-expensive-hardening option	%!s(int64=11) %!d(string=hai) anos
bug5286	a790454368 Demote "we stalled too much while trying to write" message to INFO	%!s(int64=11) %!d(string=hai) anos
ff28_ciphers	4231729176 Update ciphers.inc to match ff28	%!s(int64=11) %!d(string=hai) anos