Log Message:
-----------
Add some index entries for RAISE and exception handling in PL/PgSQL. Per
suggestion from Rainer Brandt.
Modified Files:
--------------
pgsql/doc/src/sgml:
plpgsql.sgml (r1.59 -> r1.60)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/plpgsql.sgml.diff?r1=1.59&r2=1.60)