Misc (re #1782): Fixed unregistration sent twice when calling pjsua_acc_modify with reg_uri is blank.



git-svn-id: http://svn.pjsip.org/repos/pjproject@4947 74dad513-b988-da41-8d7b-12977e46ad98
Fixed #1797: Clean up provisional media after re-invite/update



git-svn-id: http://svn.pjsip.org/repos/pjproject@4948 74dad513-b988-da41-8d7b-12977e46ad98
Fixed #1798: Crash upon receiving re-INVITE to restart ICE after failed STUN



git-svn-id: http://svn.pjsip.org/repos/pjproject@4949 74dad513-b988-da41-8d7b-12977e46ad98
Re #1782 (misc): Fixed return value of AudioMedia::getTxLevel()/getRxLevel()
to be in the range of 0-100, as stated in the doc



git-svn-id: http://svn.pjsip.org/repos/pjproject@4950 74dad513-b988-da41-8d7b-12977e46ad98
Misc (re #1782): Fixed initialize Dshow failed when the COM library already initialized.
 


git-svn-id: http://svn.pjsip.org/repos/pjproject@4951 74dad513-b988-da41-8d7b-12977e46ad98