Log Message:
-----------
Document that pg_ctl cares about the PGHOST environment variable.
Modified Files:
--------------
pgsql/doc/src/sgml/ref:
pg_ctl-ref.sgml (r1.47 -> r1.48)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_ctl-ref.sgml?r1=1.47&r2=1.48)
postgres-ref.sgml (r1.51 -> r1.52)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/postgres-ref.sgml?r1=1.51&r2=1.52)