pgsql: More < and > cleanups converted to ampersands.

Log Message:
-----------
More < and > cleanups converted to ampersands.

Tags:
----
REL8_0_STABLE

Modified Files:
--------------
pgsql/doc/src/sgml:
backup.sgml (r2.54 -> r2.54.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/backup.sgml.diff?r1=2.54&r2=2.54.4.1)
datatype.sgml (r1.154 -> r1.154.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/datatype.sgml.diff?r1=1.154&r2=1.154.4.1)
ddl.sgml (r1.38 -> r1.38.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ddl.sgml.diff?r1=1.38&r2=1.38.4.1)
dfunc.sgml (r1.28 -> r1.28.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/dfunc.sgml.diff?r1=1.28&r2=1.28.4.1)
dml.sgml (r1.9 -> r1.9.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/dml.sgml.diff?r1=1.9&r2=1.9.4.1)
ecpg.sgml (r1.62 -> r1.62.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ecpg.sgml.diff?r1=1.62&r2=1.62.4.1)
func.sgml (r1.234 -> r1.234.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/func.sgml.diff?r1=1.234&r2=1.234.4.1)
geqo.sgml (r1.27 -> r1.27.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/geqo.sgml.diff?r1=1.27&r2=1.27.4.1)
indices.sgml (r1.49 -> r1.49.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/indices.sgml.diff?r1=1.49&r2=1.49.4.1)
plpgsql.sgml (r1.57 -> r1.57.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/plpgsql.sgml.diff?r1=1.57&r2=1.57.4.1)
pltcl.sgml (r2.33 -> r2.33.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/pltcl.sgml.diff?r1=2.33&r2=2.33.4.1)
queries.sgml (r1.32 -> r1.32.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/queries.sgml.diff?r1=1.32&r2=1.32.4.1)
query.sgml (r1.42 -> r1.42.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/query.sgml.diff?r1=1.42&r2=1.42.4.1)
release.sgml (r1.321.4.1 -> r1.321.4.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/release.sgml.diff?r1=1.321.4.1&r2=1.321.4.2)
rowtypes.sgml (r2.4 -> r2.4.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/rowtypes.sgml.diff?r1=2.4&r2=2.4.4.1)
rules.sgml (r1.37.4.1 -> r1.37.4.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/rules.sgml.diff?r1=1.37.4.1&r2=1.37.4.2)
runtime.sgml (r1.301 -> r1.301.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/runtime.sgml.diff?r1=1.301&r2=1.301.4.1)
spi.sgml (r1.37.4.1 -> r1.37.4.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/spi.sgml.diff?r1=1.37.4.1&r2=1.37.4.2)
sql.sgml (r1.33 -> r1.33.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/sql.sgml.diff?r1=1.33&r2=1.33.4.1)
trigger.sgml (r1.39.4.1 -> r1.39.4.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/trigger.sgml.diff?r1=1.39.4.1&r2=1.39.4.2)
xaggr.sgml (r1.25 -> r1.25.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/xaggr.sgml.diff?r1=1.25&r2=1.25.4.1)
xfunc.sgml (r1.96.4.1 -> r1.96.4.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/xfunc.sgml.diff?r1=1.96.4.1&r2=1.96.4.2)
pgsql/doc/src/sgml/ref:
psql-ref.sgml (r1.130 -> r1.130.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/psql-ref.sgml.diff?r1=1.130&r2=1.130.4.1)