Update book web page - Mailing list pgsql-general

I have updated the web page for my book, PostgreSQL:  Introduction and Concepts:

    http://www.postgresql.org/docs/awbook.html

I have added a section for 7.1 changes, two new chapters, and some web
links, including a link to the new German translation.

--
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 853-3000
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