Log Message:
-----------
Add hint for "invalid byte sequence for encoding" error message,
suggesting review of client_encoding.
Modified Files:
--------------
pgsql/src/backend/utils/mb:
wchar.c (r1.55 -> r1.56)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/wchar.c.diff?r1=1.55&r2=1.56)