* lisp/cedet/{semantic/scope.el,ede/project-am.el}: Use lexical-scoping

* lisp/cedet/{semantic/scope.el,ede/project-am.el}: Use lexical-scoping

* lisp/cedet/ede/project-am.el: Remove redundant `:group` args.
(recentf-exclude): Declare variable.
(project-am--with-makefile-current): New function extracted from
`project-am-with-makefile-current`.  Use `with-current-buffer` and
`unwind-protect`.
(project-am-with-makefile-current): Use `declare` and
`project-am--with-makefile-current`.
(project-am-with-config-current): Use `declare` and `with-temp-buffer`.
(project-am-extract-shell-variable): Turn it into a `defun`; the use of
`defmacro` appears to have been a plain mistake.