Closes 26979.

To avoid future duplicates.

Part of 26979.

Part of 26979.

Part of 26979.

That's what git does for tor.

Part of 26979.

Part of 26979.

Conditionalize the pragma that temporarily disables
-Wunused-const-variable.  Some versions of gcc don't support it.  We
need to do this because of an apparent bug in some libzstd headers.
Fixes bug 26785; bugfix on 0.3.2.11.

Part of #26367.

Update rendcommon.h include path.

Improve the log message when connection initiators fail to authenticate
direct connections to relays.

Fixes bug 26927; bugfix on 0.3.0.1-alpha.

Instead, log a protocol warning when single onion services or
Tor2web clients fail to authenticate direct connections to relays.

Fixes bug 26924; bugfix on 0.2.9.1-alpha.

Stop putting ed25519 link specifiers in v3 onion service descriptors,
when the intro point doesn't support ed25519 link authentication.

Fixes bug 26627; bugfix on 0.3.2.4-alpha.

teor authored 6 years ago and teor committed 6 years ago

Stop sending ed25519 link specifiers in v3 onion service introduce
cells, when the rendezvous point doesn't support ed25519 link
authentication.

Fixes bug 26627; bugfix on 0.3.2.4-alpha.