Log Message:
-----------
Document array behavior for out-of-range subscripts.
Modified Files:
--------------
pgsql/doc/src/sgml:
array.sgml (r1.42 -> r1.43)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/array.sgml.diff?r1=1.42&r2=1.43)