Doc fixes re obsolete items

* doc/emacs/maintaining.texi (VC Undo):
* doc/misc/efaq-w32.texi (Font names): Replace obsolete aliases.
* doc/misc/url.texi (Customization):
Don't mention url-temporary-directory, it essentially does nothing.
* lisp/hilit-chg.el
(highlight-changes-global-changes-existing-buffers): Doc fix.
; * lisp/w32-fns.el: Comment.
; * etc/TODO: Remove obsolete ffap mention.

doc/emacs/maintaining.texi

@@ -1078,7 +1078,7 @@ Revert the work file(s) in the current VC fileset to the last revision
 @findex vc-revert
 @vindex vc-revert-show-diff
   If you want to discard all the changes you have made to the current
-VC fileset, type @kbd{C-x v u} (@code{vc-revert-buffer}).  This shows
+VC fileset, type @kbd{C-x v u} (@code{vc-revert}).  This shows
 you a diff between the work file(s) and the revision from which you
 started editing, and asks for confirmation for discarding the changes.
 If you agree, the fileset is reverted.  If you don't want @kbd{C-x v

doc/misc/efaq-w32.texi

@@ -906,7 +906,7 @@ The doc string contains a list of the system sounds you can use.
 @cindex font XLFD name format
 @cindex fontconfig font names in Emacs 23
 @cindex font dialog, using to find font names
-@findex w32-select-font
+@findex x-select-font
 @findex x-list-fonts
 
 Fonts in Emacs 22 and earlier are named using the X Logical Font
@@ -937,7 +937,7 @@ Fontconfig: Courier New-13
 To find the XFLD name for a font, you can execute the following in the
 @file{*scratch*} buffer by pressing C-j at the end of the line:
 @example
-(w32-select-font nil t)
+(x-select-font nil t)
 @end example
 
 To see a complete list of fonts, execute the following in the

doc/misc/url.texi

@@ -1263,19 +1263,6 @@ You can use this function to do completion of URLs from the history.
 @node Customization
 @chapter Customization
 
-@cindex environment variables
-  The following environment variables affect the @code{url} library's
-operation at startup.
-
-@table @code
-@item TMPDIR
-@vindex TMPDIR
-@vindex url-temporary-directory
-If this is defined, @code{url-temporary-directory} is initialized from
-it.  This variable was obsoleted in 23.1, please use
-@code{temporary-file-directory} instead.
-@end table
-
   The following user options affect the general operation of
 @code{url} library.
 

etc/TODO

@@ -216,7 +216,6 @@ Change them to use report-emacs-bug.
 **** lm-report-bug
 **** tramp-bug
 **** c-submit-bug-report
-**** ffap-bug and ffap-submit-bug (obsoleted)
 [Do all of them need changing?]
 
 ** Allow fringe indicators to display a tooltip (provide a help-echo property?)

lisp/hilit-chg.el

@@ -300,9 +300,9 @@ modes only."
 
 (defcustom highlight-changes-global-changes-existing-buffers nil
   "If non-nil, toggling global Highlight Changes mode affects existing buffers.
-Normally, `global-highlight-changes' affects only new buffers (to be
+Normally, `global-highlight-changes-mode' affects only new buffers (to be
 created).  However, if `highlight-changes-global-changes-existing-buffers'
-is non-nil, then turning on `global-highlight-changes' will turn on
+is non-nil, then turning on `global-highlight-changes-mode' will turn on
 Highlight Changes mode in suitable buffers, and turning the mode off will
 remove it from existing buffers."
   :type 'boolean

lisp/w32-fns.el

@@ -260,7 +260,7 @@ bit output with no translation."
                (cons xlfd-charset (cons windows-charset codepage))))
 
 ;; The last charset we add becomes the "preferred" charset for the return
-;; value from w32-select-font etc, so list the most important charsets last.
+;; value from x-select-font etc, so list the most important charsets last.
 (w32-add-charset-info "iso8859-14" 'w32-charset-ansi  28604)
 (w32-add-charset-info "iso8859-15" 'w32-charset-ansi  28605)
 ;; The following two are included for pattern matching.