Import vendor fixes:

Import vendor fixes:

197e0ea	Fix for TLS record tampering bug.  (CVE-2013-4353).
3462896	For DTLS we might need to retransmit messages from the
	previous session so keep a copy of write context in DTLS
	retransmission buffers instead of replacing it after
	sending CCS.  (CVE-2013-6450).
ca98926 When deciding whether to use TLS 1.2 PRF and record hash
	algorithms use the version number in the corresponding
	SSL_METHOD structure instead of the SSL structure.  The
	SSL structure version is sometimes inaccurate.
	Note: OpenSSL 1.0.2 and later effectively do this already.
	(CVE-2013-6449).