Changed version to 2.3-svn

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@4915 74dad513-b988-da41-8d7b-12977e46ad98
Re #1782 (misc): Removes ffmpeg libraries from XCode project.



git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@4916 74dad513-b988-da41-8d7b-12977e46ad98
Misc (re #1782): Fixed compile error of ios_opengl_dev.m on iOS 8 SDK due to missing OpenGLES headers (thanks Brian Walker for the report and the fix).


git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@4917 74dad513-b988-da41-8d7b-12977e46ad98
Fixed #1784: Remove the usage of nested structs/unions in PJSUA2 (unsupported by SWIG C++)



git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@4918 74dad513-b988-da41-8d7b-12977e46ad98
Re #1784: Revert API change



git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@4919 74dad513-b988-da41-8d7b-12977e46ad98
Fixed #1785: Add support for sending initial INVITE/re-INVITE/UPDATE without SDP



git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@4920 74dad513-b988-da41-8d7b-12977e46ad98