Log Message:
-----------
Improve wording of new documentation section on encryption, and move it
a few sections up.
Modified Files:
--------------
pgsql/doc/src/sgml:
runtime.sgml (r1.316 -> r1.317)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/runtime.sgml.diff?r1=1.316&r2=1.317)