Please unblock nss

[Mike Hommey <mh@glandium.org>]

Hi,

I just uploaded nss 3.12.0-5, which solves some minor issues:
 - Better upgrade path for people having libnss3-0d installed from old
   testing (while libnss3-0d from etch is just fine)
 - Tighter build dependencies for libsqlite3-dev.

Please unblock it.

Thanks

Mike