muninpgplugins - muninpgplugins: * Add check postgresql version *

Log Message:
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* Add check postgresql version
* Add n_tup_hot_upd to pg__all_tables_activity and pg__stat_tables when postgres >= 8.3
* Add n_live_tup and n_dead_tup to pg__stat_tables
* Add pg__stat_bgwriter

Modified Files:
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muninpgplugins:
ChangeLog (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/muninpgplugins/muninpgplugins/ChangeLog.diff?r1=1.1&r2=1.2)
pg__all_tables_activity (r1.1.1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/muninpgplugins/muninpgplugins/pg__all_tables_activity.diff?r1=1.1.1.1&r2=1.2)
pg__all_tables_fetch (r1.1.1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/muninpgplugins/muninpgplugins/pg__all_tables_fetch.diff?r1=1.1.1.1&r2=1.2)
pg__all_tables_scan (r1.1.1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/muninpgplugins/muninpgplugins/pg__all_tables_scan.diff?r1=1.1.1.1&r2=1.2)
pg__database_blks (r1.1.1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/muninpgplugins/muninpgplugins/pg__database_blks.diff?r1=1.1.1.1&r2=1.2)
pg__database_hitratio (r1.1.1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/muninpgplugins/muninpgplugins/pg__database_hitratio.diff?r1=1.1.1.1&r2=1.2)
pg__database_xact (r1.1.1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/muninpgplugins/muninpgplugins/pg__database_xact.diff?r1=1.1.1.1&r2=1.2)
pg__db_size (r1.1.1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/muninpgplugins/muninpgplugins/pg__db_size.diff?r1=1.1.1.1&r2=1.2)
pg__locks (r1.1.1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/muninpgplugins/muninpgplugins/pg__locks.diff?r1=1.1.1.1&r2=1.2)
pg__stat_tables (r1.1.1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/muninpgplugins/muninpgplugins/pg__stat_tables.diff?r1=1.1.1.1&r2=1.2)
pg__statio_tables (r1.1.1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/muninpgplugins/muninpgplugins/pg__statio_tables.diff?r1=1.1.1.1&r2=1.2)

Added Files:
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muninpgplugins:
pg__stat_bgwriter (r1.1)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/muninpgplugins/muninpgplugins/pg__stat_bgwriter?rev=1.1&content-type=text/x-cvsweb-markup)