Add files from parent branch HEAD:

	doc/src/sgml/array.sgml
	doc/src/sgml/backup.sgml
	doc/src/sgml/catalogs.sgml
	doc/src/sgml/charset.sgml
	doc/src/sgml/client-auth.sgml
	doc/src/sgml/cvs.sgml
	doc/src/sgml/ecpg.sgml
	doc/src/sgml/func.sgml
	doc/src/sgml/gist.sgml
	doc/src/sgml/indices.sgml
	doc/src/sgml/libpq.sgml
	doc/src/sgml/maintenance.sgml
	doc/src/sgml/nls.sgml
	doc/src/sgml/perform.sgml
	doc/src/sgml/plperl.sgml
	doc/src/sgml/plpgsql.sgml
	doc/src/sgml/ref/create_aggregate.sgml
	doc/src/sgml/ref/create_domain.sgml
	doc/src/sgml/ref/pg_ctl-ref.sgml
	doc/src/sgml/ref/pg_resetxlog.sgml
	doc/src/sgml/ref/psql-ref.sgml
	doc/src/sgml/release.sgml
	doc/src/sgml/rowtypes.sgml
	doc/src/sgml/runtime.sgml
	doc/src/sgml/storage.sgml
	doc/src/sgml/syntax.sgml
	doc/src/sgml/trigger.sgml
	doc/src/sgml/typeconv.sgml
	doc/src/sgml/wal.sgml
	doc/src/sgml/xoper.sgml