Use bigint to represent pg_stat_bgwriter values
Use bigint to represent pg_stat_bgwriter values

Bug fix.  The pg_stat_bgwriter system view itself uses bigint to
represent all values.  test_bgwriter.buffers_backend was particularly
prone to rejecting the values pgbench-tools wanted to store as being out
of range for type integer.

teoincontatto/pgbench-tools,gregs1104/pgbench-tools,teoincontatto/pgbench-tools,gregs1104/pgbench-tools,teoincontatto/pgbench-tools,gregs1104/pgbench-tools