Log Message:
-----------
More minor SGML improvements for xfunc.sgml, including making some
titles more concise. (We usually don't need to repeat the name of a
section in the title of one of its subsections.)
Modified Files:
--------------
pgsql/doc/src/sgml:
xfunc.sgml (r1.119 -> r1.120)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/xfunc.sgml.diff?r1=1.119&r2=1.120)