Log Message:
-----------
Add encryption section to documentation.
Christopher Browne
Modified Files:
--------------
pgsql/doc/src/sgml:
runtime.sgml (r1.315 -> r1.316)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/runtime.sgml.diff?r1=1.315&r2=1.316)