* www/hacking.html   (docs):     Add a link to Karl Fogel's chapter in O'Reilly's Beautiful Code       where he covers the delta editor interface.
* www/hacking.html
  (docs):
    Add a link to Karl Fogel's chapter in O'Reilly's Beautiful Code
      where he covers the delta editor interface.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@866387 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion