Log Message:-----------Convert external-projects to an appendix.
Modified Files:-------------- pgsql/doc/src/sgml: external-projects.sgml (r1.6 -> r1.7) (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/external-projects.sgml.diff?r1=1.6&r2=1.7) postgres.sgml (r1.70 -> r1.71) (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/postgres.sgml.diff?r1=1.70&r2=1.71)