Log Message:
-----------
Remove SGML makefile .SECONDARY tag so html rules will work properly;
Documentation/comment improvements.
Modified Files:
--------------
pgsql/doc/src/sgml:
Makefile (r1.90 -> r1.91)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/Makefile.diff?r1=1.90&r2=1.91)
docguide.sgml (r1.64 -> r1.65)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/docguide.sgml.diff?r1=1.64&r2=1.65)