pgsql: Correct sundry errors in Hot Standby-related comments.

Log Message:
-----------
Correct sundry errors in Hot Standby-related comments.

Fujii Masao

Tags:
----
REL9_0_STABLE

Modified Files:
--------------
pgsql/src/backend/access/transam:
xact.c (r1.293.2.2 -> r1.293.2.3)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/access/transam/xact.c?r1=1.293.2.2&r2=1.293.2.3)
pgsql/src/backend/storage/ipc:
procarray.c (r1.72 -> r1.72.2.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/storage/ipc/procarray.c?r1=1.72&r2=1.72.2.1)
standby.c (r1.27 -> r1.27.2.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/storage/ipc/standby.c?r1=1.27&r2=1.27.2.1)
pgsql/src/backend/tcop:
postgres.c (r1.595 -> r1.595.2.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/tcop/postgres.c?r1=1.595&r2=1.595.2.1)
pgsql/src/include/access:
xlog.h (r1.114.2.1 -> r1.114.2.2)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/access/xlog.h?r1=1.114.2.1&r2=1.114.2.2)
pgsql/src/include/catalog:
pg_control.h (r1.57 -> r1.57.2.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/catalog/pg_control.h?r1=1.57&r2=1.57.2.1)