pgsql: Add database page inspection /contrib module.

Log Message:
-----------
Add database page inspection /contrib module.

Simon and Heikki

Modified Files:
--------------
pgsql/contrib:
Makefile (r1.75 -> r1.76)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/Makefile.diff?r1=1.75&r2=1.76)
README (r1.92 -> r1.93)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/README.diff?r1=1.92&r2=1.93)
pgsql/contrib/pgstattuple:
README.pgstattuple (r1.9 -> r1.10)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgstattuple/README.pgstattuple.diff?r1=1.9&r2=1.10)
pgstatindex.c (r1.3 -> r1.4)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgstattuple/pgstatindex.c.diff?r1=1.3&r2=1.4)
pgstattuple.sql.in (r1.12 -> r1.13)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgstattuple/pgstattuple.sql.in.diff?r1=1.12&r2=1.13)
uninstall_pgstattuple.sql (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgstattuple/uninstall_pgstattuple.sql.diff?r1=1.2&r2=1.3)

Added Files:
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pgsql/contrib/pageinspect:
Makefile (r1.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pageinspect/Makefile?rev=1.1&content-type=text/x-cvsweb-markup)
README.pageinspect (r1.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pageinspect/README.pageinspect?rev=1.1&content-type=text/x-cvsweb-markup)
btreefuncs.c (r1.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pageinspect/btreefuncs.c?rev=1.1&content-type=text/x-cvsweb-markup)
heapfuncs.c (r1.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pageinspect/heapfuncs.c?rev=1.1&content-type=text/x-cvsweb-markup)
pageinspect.sql.in (r1.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pageinspect/pageinspect.sql.in?rev=1.1&content-type=text/x-cvsweb-markup)
rawpage.c (r1.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pageinspect/rawpage.c?rev=1.1&content-type=text/x-cvsweb-markup)
uninstall_pageinspect.sql (r1.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pageinspect/uninstall_pageinspect.sql?rev=1.1&content-type=text/x-cvsweb-markup)