Remove duplicate/conflicting code 
now that netdev_register_notifier replays the device registration events.

Change IPV6 to handle the new case where netdev events are replayed on registration:
* change code ordering so address configuration is ready before registration
  (this was actually a bug in existing code)
* take out code that capture's existing devices, this is now done in the replay
* make notifier code local to addrconf.c so it can be have smaller scope

into home.osdl.org:/home/torvalds/v2.5/linux

Spotted by Matteo Croce 

into home.osdl.org:/home/torvalds/v2.5/linux

From Martin Diehl.

From Martin Diehl.

Also, make sir-dev locking compatible with irport.
From Martin Diehl.

[ATM]: br2684 incorrectly handles frames recvd with FCS (by Alex Zeffertt <ajz@cambridgebroadband.com>)