Ebrowse: Use invisibility-spec instead of selective-display

Ebrowse: Use invisibility-spec instead of selective-display

* lisp/progmodes/ebrowse.el: Use lexical-binding.
(ebrowse-tree-mode): Set invisibility-spec instead of selective-display.
(ebrowse--hidden-p, ebrowse--hide, ebrowse--unhide): New functions.
(ebrowse-expand-all, ebrowse-unhide-base-classes, ebrowse-hide-line)
(ebrowse-mouse-1-in-tree-buffer): Use them.
(ebrowse-output): Remove macro, use with-silent-modifications instead.
(ebrowse-save-selective): Remove macro, not needed any more.
(ebrowse-trim-string, ebrowse-read, ebrowse-collapse-fn):
No need to pay attention to \r.
(ebrowse-files-list): Use push.
(ebrowse-view/find-file-and-search-pattern): Use add-hook here...
(ebrowse-find-pattern): ...and remove-hook here.
(ebrowse-view/find-position): Use add/remove-hook.