Log Message:
Updated to version 0.4.10:
	* dns: added support for using multi-threaded libresolv
	* dtls: added support for sending DTLS over e.g. TURN
	* ice: added ice_set_conf()
	       continue checklist if send fails
	* mbuf: added mbuf_shift()
	* sdp: added sdp_media_session_rattr()
	       added extmap decoding RFC 5285
	* sip: added struct sip_contact and related functions
	* sipevent: added support for URI in contact-user, used for GRUU
	* sipreg: added "gruu" to list of Supported extensions