check_pgactivity 1.25 beta1

2015-01-05 - version 1.25beta1

Changelog:

• add service pg_dump_backup
• change units of service bgwriter (github issue #29)
• support PostgreSQL 9.5
• fix backends service to remove autovacuum from the connection count (github issue #14)
• fix backends service to add walsenders to the connection count (github issue #14)
• fix a harmless perl warning
• fix wal_size service to support 9.5+
• fix corruption on status file on concurrent access
• fix bad estimation in btree bloat query with mostly NULL columns