* Client stability and enhancements:

* Client stability and enhancements:
  * CtdlServInfo structure moved inside CtdlIPC; eliminates unnecessary
    global and makes IPC more self-contained
  * Removed redundant serv_ from variable names in CtdlServInfo struct
  * Send SIGHUP to process group when connection_died().  Kills self and
    children (e.g. external editor).