Add URL reference to "Enforcing the GPL" article.
Removed duplicate SQL_BUFFER_RESULT/SQL_SMALL_RESULT texts (reported by Fournier Jocelyn).


Docs/Support/make-docbook:
  Change XML/DocBook output to have version #.## instead of #.##-alpha.
Docs/manual.texi:
  Add URL reference to "Enforcing the GPL" article.
  Removed duplicate SQL_BUFFER_RESULT/SQL_SMALL_RESULT texts (reported by Fournier Jocelyn).