[tor-bugs] #33633 [Core Tor/Tor]: Move extend and reachability code to the relay module

[Tor Bug Tracker & Wiki]

#33633: Move extend and reachability code to the relay module
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     Reporter:  teor           |      Owner:  teor
         Type:  task           |     Status:  assigned
     Priority:  Medium         |  Milestone:  Tor: 0.4.4.x-final
    Component:  Core Tor/Tor   |    Version:
     Severity:  Normal         |   Keywords:  ipv6, prop311, technical-debt
Actual Points:  0.5            |  Parent ID:  #33220
       Points:  0.5            |   Reviewer:  nickm
      Sponsor:                 |
  Sponsor55-must               |
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 Most of the extend and reachability code is already in the relay module.

 But some code was left behind in src/core/or/circuitbuild.c.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33633>
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