Log Message:
-----------
Update supported-platforms entry for Tru64.
Modified Files:
--------------
pgsql/doc/src/sgml:
installation.sgml (r1.246 -> r1.247)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/installation.sgml.diff?r1=1.246&r2=1.247)