Log Message:
Update to 0.4.9:

2014-06-18 Alfred E. Heggestad <aeh@db.org>

	* Version 0.4.9

	* aes: clear openssl error queue in error cases

	* bfcp: disabled support for DTLS-transport

	* hmac: clear openssl error queue in error cases

	* http: make response parsing a bit more robust

	* main: make use of openssl's multi-threading API

	* rtcp: added Round-Trip Time (RTT) field to struct rtcp_stats
                fix some rounding errors

	* sa: added padding buffer to struct sa union

	* sdp: improved handling of unsupported transport protocols
	       and sub-sequence offer/answer exchanges

	* srtp: added support for Secure Real-time Transport Protocol (SRTP)
                (RFC 3711 and RFC 6188)

	* sys: rand -- clear openssl error queue in error cases

	* tls: added support for generating self-signed certificates
	       added support for the SRTP-extension using openssl
	       clear openssl error queue in error cases
	       improved DTLS api