tor/changes/bug4620

  o Code simplifications and refactoring
    - Move ipv6_preferred from routerinfo_t to node_t.
      Addresses bug 4620.
Move ipv6_preferred from routerinfo_t to node_t. Move extend_info_from_router() from circuitbuild.c to router.c and make it static. Add get_configured_bridge_by_orports_digest() and have get_configured_bridge_by_routerinfo() and node_is_a_configured_bridge() use it. We now consider all OR ports of a bridge when looking for it. Move node_get_*_orport to nodelist.c. Fix a cut'n'paste error in header of nodelist.h. Add node_assert_ok(). Add router_get_all_orports(). It's duplicating code from node_get_all_orports(). Worth fixing at the cost of complicating the API slightly? 2012-08-23 12:23:00 +02:00			`o Code simplifications and refactoring`
			`- Move ipv6_preferred from routerinfo_t to node_t.`
			`Addresses bug 4620.`