Update longclaw dirauth IP to be a more stable location
Merge remote-tracking branch 'origin/maint-0.2.4' into maint-0.2.5
Merge remote-tracking branch 'origin/maint-0.2.5'
Don't build introduction circuits until we know we can build circuits

Patch from akwizgran.  Ticket 13447.
Make can_complete_circuits a static variable.