Re #1630 (misc): Fixed documentation of pjsip_generic_int_hdr



git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@4700 74dad513-b988-da41-8d7b-12977e46ad98
Close #1720:
 - Added configure flags --with-external-srtp and --disable-resample.
 - Added macro setting PJMEDIA_LIBSRTP_AUTO_INIT_DEINIT to allow application to handle libsrtp init & deinit by itself.



git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@4701 74dad513-b988-da41-8d7b-12977e46ad98
Re #1721: Clear invite transaction before calling on_call_tsx_state (on transaction terminated)

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@4703 74dad513-b988-da41-8d7b-12977e46ad98