Log Message:-----------Update feature list for SQL:2008.
Modified Files:-------------- pgsql/doc/src/sgml: features.sgml (r2.27 -> r2.28) (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/features.sgml?r1=2.27&r2=2.28) mk_feature_tables.pl (r2.2 -> r2.3) (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/mk_feature_tables.pl?r1=2.2&r2=2.3) pgsql/src/backend/catalog: sql_features.txt (r1.16 -> r1.17) (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/catalog/sql_features.txt?r1=1.16&r2=1.17)