update NSPR to version 4.10.2
* bmo#770534: possible pointer overflow in PL_ArenaAllocate()
* bmo#888546: ptio.c:PR_ImportUDPSocket doesn't work
* bmo#927687: (CVE-2013-5607) Avoid unsigned integer wrapping in
PL_ArenaAllocate.

update NSS to version 3.15.3
* Bug 925100 - (CVE-2013-1741) Ensure a size is <= half of the maximum
PRUint32 value
* Bug 934016 - (CVE-2013-5605) Handle invalid handshake packets
* Bug 910438 - (CVE-2013-5606) Return the correct result in
CERT_VerifyCert on failure, if a verifyLog isn't used