pgsql: Fix seriously broken markup for libpq-envars cross-references.

Log Message:
-----------
Fix seriously broken markup for libpq-envars cross-references.

Tags:
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REL8_2_STABLE

Modified Files:
--------------
pgsql/doc/src/sgml/ref:
clusterdb.sgml (r1.18.2.1 -> r1.18.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/clusterdb.sgml.diff?r1=1.18.2.1&r2=1.18.2.2)
createdb.sgml (r1.42.2.1 -> r1.42.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/createdb.sgml.diff?r1=1.42.2.1&r2=1.42.2.2)
createlang.sgml (r1.38.2.1 -> r1.38.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/createlang.sgml.diff?r1=1.38.2.1&r2=1.38.2.2)
createuser.sgml (r1.45.2.1 -> r1.45.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/createuser.sgml.diff?r1=1.45.2.1&r2=1.45.2.2)
dropdb.sgml (r1.28.2.1 -> r1.28.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/dropdb.sgml.diff?r1=1.28.2.1&r2=1.28.2.2)
droplang.sgml (r1.27.2.1 -> r1.27.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/droplang.sgml.diff?r1=1.27.2.1&r2=1.27.2.2)
dropuser.sgml (r1.34.2.1 -> r1.34.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/dropuser.sgml.diff?r1=1.34.2.1&r2=1.34.2.2)
initdb.sgml (r1.37.2.1 -> r1.37.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/initdb.sgml.diff?r1=1.37.2.1&r2=1.37.2.2)
pg_ctl-ref.sgml (r1.35.2.1 -> r1.35.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_ctl-ref.sgml.diff?r1=1.35.2.1&r2=1.35.2.2)
pg_dump.sgml (r1.92.2.1 -> r1.92.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_dump.sgml.diff?r1=1.92.2.1&r2=1.92.2.2)
pg_dumpall.sgml (r1.58.2.2 -> r1.58.2.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_dumpall.sgml.diff?r1=1.58.2.2&r2=1.58.2.3)
pg_restore.sgml (r1.64.2.1 -> r1.64.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_restore.sgml.diff?r1=1.64.2.1&r2=1.64.2.2)
psql-ref.sgml (r1.175.2.4 -> r1.175.2.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/psql-ref.sgml.diff?r1=1.175.2.4&r2=1.175.2.5)
reindexdb.sgml (r1.2.2.1 -> r1.2.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/reindexdb.sgml.diff?r1=1.2.2.1&r2=1.2.2.2)
vacuumdb.sgml (r1.37.2.1 -> r1.37.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/vacuumdb.sgml.diff?r1=1.37.2.1&r2=1.37.2.2)