Log Message:
-----------
Update HOT description to make index column changes clearer.
Modified Files:
--------------
pgsql/doc/src/sgml:
release.sgml (r1.560 -> r1.561)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/release.sgml?r1=1.560&r2=1.561)