Log Message:
-----------
Recommend '' for literal ', rather than \', in psql documentation.
Modified Files:
--------------
pgsql/doc/src/sgml/ref:
psql-ref.sgml (r1.163 -> r1.164)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/psql-ref.sgml.diff?r1=1.163&r2=1.164)