[tomek-maverics] Compilation fixes for Mac OS 10.9
Merge branch 'tomek-mavericks' into pd-ietf-demo2
[pd-ietf-demo2] Subnet-id fix
[pd-ietf-demo2] Rebind, Decline, Confirm fixes

 - Rebind, Confirm are now ignored
 - Decline is replied with REPLY with status code unspec-fail
   and a comment that Decline is not supported yet.
[pd-ietf-demo2] Compilation fix for clang