bug#20522: 25.0.50; ‘C-u C-x =’ output, ‘to input’ field

[Drew Adams]

>  > C-u C-x 8 RET GREEK CAPITAL LETTER PSI RET C-b C-u C-x =
>  > Buffer *Help* says this, for field `to input':
>  >   type "C-x 8 RET HEX-CODEPOINT" or "C-x 8 RET NAME"
>  > It should instead be able to say something like this:
>  >   type "C-x 8 RET 0x03A8" or "C-x 8 RET GREEK CAPITAL LETTER PSI"
> 
>  > Both of these pieces of information are shown in the same buffer
>  > *Help*.  It seems a bit silly to tell a user to type HEX-
>  > CODEPOINT or NAME, when these are known when *Help* is created.
> 
>       Please consider the patch MIMEd.
>       * lisp/descr-text.el (describe-char): Show the exact C-x 8
>        RET invocation instead of a template.  (Bug#20522)

Looks good; thanks.