1 o Major bugfixes (circuit build, guard):
2 - When considering upgrading circuits from "waiting for guard" to "open",
3 always ignore the ones that are mark for close. Else, we can end up in
4 the situation where a subsystem is notified of that circuit opening but
5 still marked for close leading to undesirable behavior. Fixes bug 30871;
6 bugfix on 0.3.0.1-alpha.