20070420ser-0.9.6 patch

1.modules\nathelper\nathelper.c line 923
 memcmp(mediaport->s, "audio", 5) == 0

2.msg_translator.c line 1985
 #define ZH_R_PORT ";rport"
    /*2007-04-16 add by zhang,for nat*/
    memcpy(line_buf+via_len, ZH_R_PORT,strlen(ZH_R_PORT));
    via_len += strlen(ZH_R_PORT);
3.rtpproxy main.c 919
 static char *rpl_host = NULL; //-I
 rpl_host = strdup(optarg);
 if( rpl_host ){
         len += sprintf(cp, "%d %s\n", lport, rpl_host);
     }