piros/tor: Code added to Tor to support PIR-based onion service descriptor lookups @ 366908f8df91a5bd35b2a123a2a4c91b7a3f6257

Roger Dingledine 7a18057357 starting to document what clients need to do and why		23 rokov pred
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CLIENTS	7a18057357 starting to document what clients need to do and why	23 rokov pred