[docbook] Proposal: stop shipping entity sets with DocBook V4.4

[Norman Walsh <ndw at nwalsh dot com>]

The ISO entity sets are now maintained in XML at the W3C:

  http://www.w3.org/2003/entities/

I think it's time to stop shipping our own hacked sets with DocBook.

Pro: - one less set of entities in the world
     - makes the distribution smaller
     - fixes a recently reported bug that the mapping for hyphen
       is incorrect in the current sets
     - relies on an external standard for XML entities just like for SGML entities
     - means that a single set can be shared across all of a users documents

Con: - one more thing for the end user to install
     - I don't know if they're packaged yet
     - the system identifier will hit the net if you aren't using a catalog of
       some sort

On balance, I think the pros outweigh the cons, but I doubt that'll
get unanimous agreement.

                                        Be seeing you,
                                          norm

-- 
Norman Walsh <ndw@nwalsh.com>      | 'I have done that,' says my
http://www.oasis-open.org/docbook/ | memory. 'I cannot have done
Chair, DocBook Technical Committee | that'--says my pride, and remains
                                   | adamant. At last--memory yields.--
                                   | Nietzsche

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