Log Message:
-----------
Update docs to clarify purpose of SSL key file
Modified Files:
--------------
pgsql/doc/src/sgml:
libpq.sgml (r1.250 -> r1.251)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/libpq.sgml?r1=1.250&r2=1.251)
runtime.sgml (r1.396 -> r1.397)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/runtime.sgml?r1=1.396&r2=1.397)