Log Message:
-----------
Update info about shared memory space calculation to match CVS tip's behavior.
Modified Files:
--------------
pgsql/doc/src/sgml:
runtime.sgml (r1.357 -> r1.358)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/runtime.sgml.diff?r1=1.357&r2=1.358)