* wdired.el (wdired-change-to-wdired-mode, wdired-finish-edit)
        (wdired-search-and-rename, wdired-do-symlink-changes)
        (wdired-do-perm-changes): Simplify code.
	(wdired-preprocess-files, wdired-preprocess-symlinks)
        (wdired-preprocess-perms): Make read-only property of preceding
        character rear-nonsticky to avoid that it can be modified.  Put
        old-name and old-link properties on character preceding name and
        replace put-text-property by add-text-properties.
	(wdired-get-filename, wdired-get-previous-link): Get old-name
	and old-link properties from character preceding name and
	simplify code.
	(wdired-preprocess-perms, wdired-set-bit, wdired-toggle-bit):
	Make local-map property rear-nonsticky to avoid that text
	following permissions may be modified.  Use add-text-properties
	instead of put-text-property when changing a permission bit.
	(wdired-change-to-dired-mode): Remove stickiness properties.