nss update to 3.12.10 available in updates-testing for f15

[Elio Maldonado]

See: 
https://admin.fedoraproject.org/updates/nss-3.12.10-1.fc15,nss-softokn-3.12.10-1.fc15,nss-util-3.12.10-1.fc15,nspr-4.8.8-1.fc15

For the lists of upstream bug fixes see:
https://bugzilla.mozilla.org/buglist.cgi?order=Importance&resolution=FIXED&classification=Components&query_format=advanced&product=NSPR&target_milestone=4.8.8&list_id=199265 
   and
https://bugzilla.mozilla.org/buglist.cgi?order=Importance&resolution=FIXED&classification=Components&query_format=advanced&product=NSS&target_milestone=3.12.10&list_id=199265

Elio