Обсуждение: pgsql: Add functions to /contrib/pgstattuple that show index statistics

Log Message:
-----------
Add functions to /contrib/pgstattuple that show index statistics and
index page contents.

Satoshi Nagayasu

Modified Files:
--------------
    pgsql/contrib/pgstattuple:
        Makefile (r1.5 -> r1.6)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgstattuple/Makefile.diff?r1=1.5&r2=1.6)
        README.pgstattuple (r1.8 -> r1.9)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgstattuple/README.pgstattuple.diff?r1=1.8&r2=1.9)
        pgstattuple.sql.in (r1.10 -> r1.11)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgstattuple/pgstattuple.sql.in.diff?r1=1.10&r2=1.11)

Added Files:
-----------
    pgsql/contrib/pgstattuple:
        pgstatindex.c (r1.1)

(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgstattuple/pgstatindex.c?rev=1.1&content-type=text/x-cvsweb-markup)