pgsql: Document --version and --help options for all client applications

Log Message:
-----------
Document --version and --help options for all client applications (they
all support it).

Per report from Josh Kupershmidt

Modified Files:
--------------
pgsql/doc/src/sgml/ref:
clusterdb.sgml (r1.26 -> r1.27)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/clusterdb.sgml?r1=1.26&r2=1.27)
createdb.sgml (r1.50 -> r1.51)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/createdb.sgml?r1=1.50&r2=1.51)
createlang.sgml (r1.44 -> r1.45)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/createlang.sgml?r1=1.44&r2=1.45)
createuser.sgml (r1.53 -> r1.54)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/createuser.sgml?r1=1.53&r2=1.54)
dropdb.sgml (r1.36 -> r1.37)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/dropdb.sgml?r1=1.36&r2=1.37)
droplang.sgml (r1.32 -> r1.33)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/droplang.sgml?r1=1.32&r2=1.33)
dropuser.sgml (r1.41 -> r1.42)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/dropuser.sgml?r1=1.41&r2=1.42)
ecpg-ref.sgml (r1.33 -> r1.34)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/ecpg-ref.sgml?r1=1.33&r2=1.34)
initdb.sgml (r1.45 -> r1.46)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/initdb.sgml?r1=1.45&r2=1.46)
pg_controldata.sgml (r1.11 -> r1.12)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_controldata.sgml?r1=1.11&r2=1.12)
pg_dump.sgml (r1.115 -> r1.116)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_dump.sgml?r1=1.115&r2=1.116)
pg_dumpall.sgml (r1.80 -> r1.81)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_dumpall.sgml?r1=1.80&r2=1.81)
pg_resetxlog.sgml (r1.21 -> r1.22)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_resetxlog.sgml?r1=1.21&r2=1.22)
pg_restore.sgml (r1.83 -> r1.84)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_restore.sgml?r1=1.83&r2=1.84)
psql-ref.sgml (r1.238 -> r1.239)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/psql-ref.sgml?r1=1.238&r2=1.239)
reindexdb.sgml (r1.8 -> r1.9)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/reindexdb.sgml?r1=1.8&r2=1.9)
vacuumdb.sgml (r1.51 -> r1.52)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/vacuumdb.sgml?r1=1.51&r2=1.52)