Thread: pgsql-server: Adjust pgstat message definitions so that the target

Log Message:
-----------
Adjust pgstat message definitions so that the target message size is
specified in just one place and adhered to exactly, rather than just more
or less.  A side effect is to increase PGSTAT_ACTIVITY_SIZE (maximum
reported query length) from 256 to nearly 1000.

Modified Files:
--------------
    pgsql-server/src/backend/postmaster:
        pgstat.c (r1.75 -> r1.76)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/postmaster/pgstat.c.diff?r1=1.75&r2=1.76)
    pgsql-server/src/include:
        pgstat.h (r1.24 -> r1.25)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/include/pgstat.h.diff?r1=1.24&r2=1.25)