Replace add-hook load-hook with with-eval-after-load

Replace add-hook load-hook with with-eval-after-load

* lisp/info.el (Info-install-speedbar-variables):
* lisp/cedet/ede.el (speedbar):
* lisp/cedet/semantic/imenu.el (speedbar):
* lisp/emacs-lisp/eieio-opt.el (eieio-class-speedbar-key-map):
* lisp/emacs-lisp/eieio-speedbar.el (eieio-speedbar-create):
* lisp/erc/erc-speedbar.el (erc-install-speedbar-variables):
* lisp/mail/rmail.el (rmail-install-speedbar-variables):
* lisp/progmodes/gud.el (gud-install-speedbar-variables):
Use with-eval-after-load.