Thread: pgsql: Document that SELECT ...

Log Message:
-----------
Document that SELECT ... ORDER BY .. FOR UPDATE/SHARE might return
results out of order because of locking, per bug report 4593

Modified Files:
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    pgsql/doc/src/sgml/ref:
        select.sgml (r1.118 -> r1.119)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/select.sgml?r1=1.118&r2=1.119)