Log Message:
Update libosip to 3.0.3.
This version contains the fix addressed in PR 35825.

libosip2 (3.0.3)
        * initial support for rtems.

libosip2 (3.0.2)
        * initial support for ucos.
        * fix to ignore broken optionnal header when parsing.

libosip2 (3.0.1)
        * add Windows CE support with Visual Studio 2005
          (WM5.0,PocketPC 2003/2005, Smartphone)
        * Fix memory leaks (not likely to happen).
        * Fix buffer overrun in url.
        * Modification of the Application Binary Interface (ABI)
          to decrease number of allocations.
          Changes: osip_message_t/osip_dialog_t/sdp_message_t/osip_fifo_t
        * save route headers in the same order (CALLER or CALLER) in dialogs.

libosip2 (2.2.3)
        * fix 64-bit (amd64) issue with hash.
        * remove SDP negotiation (much better to do it in your applications)