Additional notes:
- make-network-process signals a (file-missing "make client process failed" "No such file or directory" :name "server-client-test" :family local :server nil :noquery t :service "/dev/shm/madhu/emacs/emacs-test")
  which is not supposed to happen since the file would be created by the
  system call to socket.  I suspect a wrong error is being reported
  because of some problem with pselect (which is interrupted when we
  enter gdb)

- load custom.el to try to avoid an unrelated emacs-abort which
  otherwise seems to happen from within the custom mechanism
- another unrelated emacs-bug. M-x gud-gdb -- emacs .. with the above
  arg line fails to pass the quoted arguments to gdb.