piros/tor: Code added to Tor to support PIR-based onion service descriptor lookups @ bd00c152bb6dbf0c86a66f6274a2e2c7e04b6702

Nick Mathewson bd00c152bb Remove the changes files from master (0.2.7) that already got merged into changelogs for 0.2.6.4-rc or earlier.		10 lat temu
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bug14806	034f51dd02 Be exact about the number of spaces in the header.	10 lat temu
bug14922	320a68026e changes file for 14922	10 lat temu
bug14987b-doc	cf55070e2c Standardize on calling them "server descriptors".	10 lat temu
bug15033	3e30d4df7f Have zero_length_keys.sh use an empty torrc file.	10 lat temu
feature15180	9dc90a5b7b Add `check-changes` rule for checking formatting of changes files.	10 lat temu