Misc (re #1751): do not update RTCP TX statistic if sending RTP in stream (audio and video) fails

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@4816 74dad513-b988-da41-8d7b-12977e46ad98
Closed #1760: added pjsip_tcp_transport_get_socket() API to get the raw socket handle from SIP TCP transport

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@4817 74dad513-b988-da41-8d7b-12977e46ad98
Misc re #1751: increase maximum ALSA devices from 16 to 32

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@4818 74dad513-b988-da41-8d7b-12977e46ad98
Fixed #1761: Remove "timer" from Supported header if it is disabled

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@4819 74dad513-b988-da41-8d7b-12977e46ad98
Fix #1759: Added check for call disconnection in ICE media transport creation.



git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@4820 74dad513-b988-da41-8d7b-12977e46ad98