Merge remote-tracking branch 'arma/bug6743' into maint-0.2.3

changes/bug6743

+  o Minor bugfixes:
+    - Allow one-hop directory fetching circuits the full "circuit build
+      timeout" period, rather than just half of it, before failing them
+      and marking the relay down. This fix should help reduce cases where
+      clients declare relays (or worse, bridges) unreachable because
+      the TLS handshake takes a few seconds to complete. Fixes bug 6743;
+      bugfix on 0.2.2.2-alpha, where we changed the timeout from a static
+      30 seconds.
+

src/or/circuituse.c

@@ -372,7 +372,7 @@ circuit_expire_building(void)
   } while (0)
 
   SET_CUTOFF(general_cutoff, circ_times.timeout_ms);
-  SET_CUTOFF(begindir_cutoff, circ_times.timeout_ms / 2.0);
+  SET_CUTOFF(begindir_cutoff, circ_times.timeout_ms);
   SET_CUTOFF(fourhop_cutoff, circ_times.timeout_ms * (4/3.0));
   SET_CUTOFF(cannibalize_cutoff, circ_times.timeout_ms / 2.0);
   SET_CUTOFF(close_cutoff, circ_times.close_ms);