Log Message:
-----------
Add pg_buffercache contrib module, from Mark Kirkwood.

Modified Files:
--------------
pgsql/contrib:
Makefile (r1.53 -> r1.54)
(http://developer.postgresql.org/cvsw...1=1.53&r2=1.54)
README (r1.75 -> r1.76)
(http://developer.postgresql.org/cvsw...1=1.75&r2=1.76)

Added Files:
-----------
pgsql/contrib/pg_buffercache:
Makefile (r1.1)
(http://developer.postgresql.org/cvsw...-cvsweb-markup)
README.pg_buffercache (r1.1)
(http://developer.postgresql.org/cvsw...-cvsweb-markup)
pg_buffercache.sql.in (r1.1)
(http://developer.postgresql.org/cvsw...-cvsweb-markup)
pg_buffercache_pages.c (r1.1)
(http://developer.postgresql.org/cvsw...-cvsweb-markup)
pg_buffercache_pages.h (r1.1)
(http://developer.postgresql.org/cvsw...-cvsweb-markup)

---------------------------(end of broadcast)---------------------------
TIP 9: the planner will ignore your desire to choose an index scan if your
joining column's datatypes do not match