Add contrib/isn module for ISBN/ISSN/EAN13/etc product numbers, and

remove the old isbn_issn module which is about to be obsoleted by EAN13.
contrib/isn is by Germán Méndez Bravo.  Our thanks to Garrett A. Wollman
for having written the original isbn_issn module.

Author: tglsfdc

contrib/Makefile

@@ -1,4 +1,4 @@
-# $PostgreSQL: pgsql/contrib/Makefile,v 1.69 2006/09/05 18:00:57 teodor Exp $
+# $PostgreSQL: pgsql/contrib/Makefile,v 1.70 2006/09/09 04:07:51 tgl Exp $
 
 subdir = contrib
 top_builddir = ..
@@ -12,10 +12,10 @@ WANTED_DIRS = \
 		dblink		\
 		earthdistance	\
 		fuzzystrmatch	\
-		hstore			\
+		hstore		\
 		intagg		\
 		intarray	\
-		isbn_issn	\
+		isn		\
 		lo		\
 		ltree		\
 		oid2name	\

contrib/README

@@ -64,9 +64,9 @@ intarray -
 	Index support for arrays of int4, using GiST
 	by Teodor Sigaev <teodor@sigaev.ru> and Oleg Bartunov <oleg@sai.msu.su>
 
-isbn_issn -
-	PostgreSQL type extensions for ISBN (books) and ISSN (serials)
-	by Garrett A. Wollman <wollman@khavrinen.lcs.mit.edu>
+isn -
+	PostgreSQL type extensions for ISBN, ISSN, ISMN, EAN13 product numbers
+	by Germ�n M�ndez Bravo (Kronuz) <kronuz@hotmail.com>
 
 lo -
 	Large Object maintenance