bug#14534: 24.3.50; Document recent enhancements to hi-lock.el

[Jambunathan K]

Document user option

        hi-lock-auto-select-face

Document enhancments 
         
            C-x w r => Removes highight at point.
        C-u C-x w r => Remove all highlights in the buffer.

            C-x w h => Automatically when auto select is on.
        C-u C-x w h => Prompt for a face even if when auto select is on.

If `highlight-symbol-at-point' which is in patch queue is committed,
document that as well.

In GNU Emacs 24.3.50.4 (i686-pc-linux-gnu, GTK+ Version 2.20.1)
 of 2013-05-28 on debian-6.05
Bzr revision: 112750 xfq.free@gmail.com-20130528010541-pm5k3k6hy16k12w4
Windowing system distributor `The X.Org Foundation', version 11.0.10707000
Important settings:
  value of $LANG: en_IN
  locale-coding-system: iso-latin-1-unix
  default enable-multibyte-characters: t