fix some network bugs; send image over other socket

cmdlnopts.h

@@ -38,6 +38,7 @@ typedef struct{
     char *logfile;      // when run as server log here
     char *path;         // UNIX socket name
     char *port;         // local INET socket port
+    char *imageport;    // port to send/receive images (by default == port+1)
     char *pidfile;      // PID file (default: /tmp/CCD_Capture.pid)
     char **addhdr;      // list of files from which to add header records
     int restart;        // restart server